diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9c8a962..47682a1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,12 +15,12 @@ jobs:
       contents: read
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
-        go-version: '1.23'
+        go-version: '1.24'
         cache: true
         cache-dependency-path: rpc-health-checker/go.sum
 
@@ -30,7 +30,7 @@ jobs:
         go mod download
 
     - name: Run golangci-lint
-      uses: golangci/golangci-lint-action@v3
+      uses: golangci/golangci-lint-action@v9
       with:
         version: latest
         working-directory: rpc-health-checker
@@ -42,12 +42,12 @@ jobs:
       contents: read
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
-        go-version: '1.23'
+        go-version: '1.24'
         cache: true
         cache-dependency-path: go-proxy-cache/go.sum
 
@@ -57,7 +57,7 @@ jobs:
         go mod download
 
     - name: Run golangci-lint
-      uses: golangci/golangci-lint-action@v3
+      uses: golangci/golangci-lint-action@v9
       with:
         version: latest
         working-directory: go-proxy-cache 
\ No newline at end of file
diff --git a/.github/workflows/lua_tests.yml b/.github/workflows/lua_tests.yml
index 850e843..af266fc 100644
--- a/.github/workflows/lua_tests.yml
+++ b/.github/workflows/lua_tests.yml
@@ -23,7 +23,7 @@ jobs:
       contents: read
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Install Lua and LuaRocks
       run: |
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f084eef..61c562b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,12 +15,12 @@ jobs:
       contents: read
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
-        go-version: '1.23'
+        go-version: '1.24'
         cache: true
         cache-dependency-path: rpc-health-checker/go.sum
 
@@ -42,12 +42,12 @@ jobs:
       contents: read
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
-        go-version: '1.23'
+        go-version: '1.24'
         cache: true
         cache-dependency-path: go-proxy-cache/go.sum
 
diff --git a/go-auth-service/Dockerfile b/go-auth-service/Dockerfile
index eb58a39..3225929 100644
--- a/go-auth-service/Dockerfile
+++ b/go-auth-service/Dockerfile
@@ -1,5 +1,5 @@
 # Build stage
-FROM golang:1.23-alpine AS builder
+FROM golang:1.24-alpine AS builder
 
 WORKDIR /app
 
diff --git a/go-auth-service/cmd/test-puzzle-auth/main.go b/go-auth-service/cmd/test-puzzle-auth/main.go
index bf2a78d..442ccc0 100644
--- a/go-auth-service/cmd/test-puzzle-auth/main.go
+++ b/go-auth-service/cmd/test-puzzle-auth/main.go
@@ -181,7 +181,9 @@ func checkServiceStatus(baseURL string) bool {
 	if err != nil {
 		return false
 	}
-	defer resp.Body.Close()
+	defer func() {
+		_ = resp.Body.Close()
+	}()
 	return resp.StatusCode == 200
 }
 
@@ -190,7 +192,9 @@ func getPuzzle(baseURL string) (*PuzzleResponse, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer resp.Body.Close()
+	defer func() {
+		_ = resp.Body.Close()
+	}()
 
 	if resp.StatusCode != 200 {
 		body, _ := io.ReadAll(resp.Body)
@@ -215,7 +219,9 @@ func submitSolution(baseURL string, solveReq SolveRequest) (*TokenResponse, erro
 	if err != nil {
 		return nil, err
 	}
-	defer resp.Body.Close()
+	defer func() {
+		_ = resp.Body.Close()
+	}()
 
 	if resp.StatusCode != 200 {
 		body, _ := io.ReadAll(resp.Body)
@@ -243,7 +249,9 @@ func verifyToken(baseURL, token string) bool {
 	if err != nil {
 		return false
 	}
-	defer resp.Body.Close()
+	defer func() {
+		_ = resp.Body.Close()
+	}()
 
 	return resp.StatusCode == 200
 }
diff --git a/go-auth-service/go.mod b/go-auth-service/go.mod
index e15289a..def3473 100644
--- a/go-auth-service/go.mod
+++ b/go-auth-service/go.mod
@@ -1,22 +1,22 @@
 module go-auth-service
 
-go 1.23.0
-
-toolchain go1.23.10
+go 1.24.0
 
 require (
-	github.com/golang-jwt/jwt/v5 v5.2.2
-	github.com/prometheus/client_golang v1.22.0
-	golang.org/x/crypto v0.39.0
+	github.com/golang-jwt/jwt/v5 v5.3.0
+	github.com/prometheus/client_golang v1.23.2
+	golang.org/x/crypto v0.46.0
 )
 
 require (
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/kr/text v0.2.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/prometheus/client_model v0.6.1 // indirect
-	github.com/prometheus/common v0.62.0 // indirect
-	github.com/prometheus/procfs v0.15.1 // indirect
-	golang.org/x/sys v0.33.0 // indirect
-	google.golang.org/protobuf v1.36.5 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.66.1 // indirect
+	github.com/prometheus/procfs v0.16.1 // indirect
+	go.yaml.in/yaml/v2 v2.4.2 // indirect
+	golang.org/x/sys v0.39.0 // indirect
+	google.golang.org/protobuf v1.36.8 // indirect
 )
diff --git a/go-auth-service/go.sum b/go-auth-service/go.sum
index 91c0818..af8e7bb 100644
--- a/go-auth-service/go.sum
+++ b/go-auth-service/go.sum
@@ -2,31 +2,49 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/golang-jwt/jwt/v5 v5.2.2 h1:Rl4B7itRWVtYIHFrSNd7vhTiz9UpLdi6gZhZ3wEeDy8=
-github.com/golang-jwt/jwt/v5 v5.2.2/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
+github.com/golang-jwt/jwt/v5 v5.3.0 h1:pv4AsKCKKZuqlgs5sUmn4x8UlGa0kEVt/puTpKx9vvo=
+github.com/golang-jwt/jwt/v5 v5.3.0/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
+github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
+github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
+github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_golang v1.22.0 h1:rb93p9lokFEsctTys46VnV1kLCDpVZ0a/Y92Vm0Zc6Q=
-github.com/prometheus/client_golang v1.22.0/go.mod h1:R7ljNsLXhuQXYZYtw6GAE9AZg8Y7vEW5scdCXrWRXC0=
-github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
-github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
-github.com/prometheus/common v0.62.0 h1:xasJaQlnWAeyHdUBeGjXmutelfJHWMRr+Fg4QszZ2Io=
-github.com/prometheus/common v0.62.0/go.mod h1:vyBcEuLSvWos9B1+CyL7JZ2up+uFzXhkqml0W5zIY1I=
-github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc=
-github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk=
-github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
-github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-golang.org/x/crypto v0.39.0 h1:SHs+kF4LP+f+p14esP5jAoDpHU8Gu/v9lFRK6IT5imM=
-golang.org/x/crypto v0.39.0/go.mod h1:L+Xg3Wf6HoL4Bn4238Z6ft6KfEpN0tJGo53AAPC632U=
-golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
-golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
-google.golang.org/protobuf v1.36.5 h1:tPhr+woSbjfYvY6/GPufUoYizxw1cF/yFoxJ2fmpwlM=
-google.golang.org/protobuf v1.36.5/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
+github.com/prometheus/client_golang v1.23.2 h1:Je96obch5RDVy3FDMndoUsjAhG5Edi49h0RJWRi/o0o=
+github.com/prometheus/client_golang v1.23.2/go.mod h1:Tb1a6LWHB3/SPIzCoaDXI4I8UHKeFTEQ1YCr+0Gyqmg=
+github.com/prometheus/client_model v0.6.2 h1:oBsgwpGs7iVziMvrGhE53c/GrLUsZdHnqNwqPLxwZyk=
+github.com/prometheus/client_model v0.6.2/go.mod h1:y3m2F6Gdpfy6Ut/GBsUqTWZqCUvMVzSfMLjcu6wAwpE=
+github.com/prometheus/common v0.66.1 h1:h5E0h5/Y8niHc5DlaLlWLArTQI7tMrsfQjHV+d9ZoGs=
+github.com/prometheus/common v0.66.1/go.mod h1:gcaUsgf3KfRSwHY4dIMXLPV0K/Wg1oZ8+SbZk/HH/dA=
+github.com/prometheus/procfs v0.16.1 h1:hZ15bTNuirocR6u0JZ6BAHHmwS1p8B4P6MRqxtzMyRg=
+github.com/prometheus/procfs v0.16.1/go.mod h1:teAbpZRB1iIAJYREa1LsoWUXykVXA1KlTmWl8x/U+Is=
+github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
+github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
+go.yaml.in/yaml/v2 v2.4.2 h1:DzmwEr2rDGHl7lsFgAHxmNz/1NlQ7xLIrlN2h5d1eGI=
+go.yaml.in/yaml/v2 v2.4.2/go.mod h1:081UH+NErpNdqlCXm3TtEran0rJZGxAYx9hb/ELlsPU=
+golang.org/x/crypto v0.46.0 h1:cKRW/pmt1pKAfetfu+RCEvjvZkA9RimPbh7bhFjGVBU=
+golang.org/x/crypto v0.46.0/go.mod h1:Evb/oLKmMraqjZ2iQTwDwvCtJkczlDuTmdJXoZVzqU0=
+golang.org/x/sys v0.39.0 h1:CvCKL8MeisomCi6qNZ+wbb0DN9E5AATixKsvNtMoMFk=
+golang.org/x/sys v0.39.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+google.golang.org/protobuf v1.36.8 h1:xHScyCOEuuwZEc6UtSOvPbAT4zRh0xcNRYekJwfqyMc=
+google.golang.org/protobuf v1.36.8/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/go-auth-service/internal/handlers/handlers.go b/go-auth-service/internal/handlers/handlers.go
index c081a72..fa691f4 100644
--- a/go-auth-service/internal/handlers/handlers.go
+++ b/go-auth-service/internal/handlers/handlers.go
@@ -3,6 +3,7 @@ package handlers
 import (
 	"encoding/json"
 	"fmt"
+	"log/slog"
 	"net/http"
 	"strings"
 	"sync"
@@ -51,7 +52,9 @@ func (h *Handlers) PuzzleHandler(w http.ResponseWriter, r *http.Request) {
 		},
 	}
 
-	json.NewEncoder(w).Encode(response)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		slog.Error("failed to encode puzzle response", "error", err)
+	}
 }
 
 // SolveRequest for puzzle solving
@@ -138,7 +141,9 @@ func (h *Handlers) SolveHandler(w http.ResponseWriter, r *http.Request) {
 		"request_limit": h.config.RequestsPerToken,
 	}
 
-	json.NewEncoder(w).Encode(response)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		slog.Error("failed to encode solve response", "error", err)
+	}
 }
 
 // TestSolveHandler provides a test endpoint that generates a valid solution with HMAC
@@ -176,7 +181,9 @@ func (h *Handlers) TestSolveHandler(w http.ResponseWriter, r *http.Request) {
 		},
 	}
 
-	json.NewEncoder(w).Encode(response)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		slog.Error("failed to encode test-solve response", "error", err)
+	}
 }
 
 // VerifyHandler handles JWT token verification for nginx auth_request
@@ -260,5 +267,7 @@ func (h *Handlers) StatusHandler(w http.ResponseWriter, r *http.Request) {
 		},
 	}
 
-	json.NewEncoder(w).Encode(response)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		slog.Error("failed to encode status response", "error", err)
+	}
 }
diff --git a/go-proxy-cache/Dockerfile b/go-proxy-cache/Dockerfile
index 499cccb..f07996d 100644
--- a/go-proxy-cache/Dockerfile
+++ b/go-proxy-cache/Dockerfile
@@ -1,5 +1,5 @@
 # Build stage
-FROM golang:1.23-alpine AS builder
+FROM golang:1.24-alpine AS builder
 
 # Install dependencies
 RUN apk add --no-cache git
diff --git a/go-proxy-cache/go.mod b/go-proxy-cache/go.mod
index 1087dac..55ad7a3 100644
--- a/go-proxy-cache/go.mod
+++ b/go-proxy-cache/go.mod
@@ -1,34 +1,30 @@
 module go-proxy-cache
 
-go 1.23.0
-
-toolchain go1.23.11
+go 1.24.0
 
 require (
 	github.com/allegro/bigcache/v3 v3.1.0
 	github.com/go-redis/redis/v8 v8.11.5
-	github.com/gorilla/mux v1.8.0
-	github.com/prometheus/client_golang v1.23.0
-	github.com/stretchr/testify v1.10.0
+	github.com/gorilla/mux v1.8.1
+	github.com/prometheus/client_golang v1.23.2
+	github.com/stretchr/testify v1.11.1
 	go.uber.org/mock v0.6.0
-	go.uber.org/zap v1.24.0
+	go.uber.org/zap v1.27.1
 	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
-	github.com/benbjohnson/clock v1.1.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
-	github.com/kr/text v0.2.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/prometheus/common v0.65.0 // indirect
+	github.com/prometheus/common v0.66.1 // indirect
 	github.com/prometheus/procfs v0.16.1 // indirect
-	go.uber.org/atomic v1.7.0 // indirect
-	go.uber.org/multierr v1.6.0 // indirect
-	golang.org/x/sys v0.33.0 // indirect
-	google.golang.org/protobuf v1.36.6 // indirect
+	go.uber.org/multierr v1.10.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.2 // indirect
+	golang.org/x/sys v0.35.0 // indirect
+	google.golang.org/protobuf v1.36.8 // indirect
 )
diff --git a/go-proxy-cache/go.sum b/go-proxy-cache/go.sum
index cb29f27..daac04e 100644
--- a/go-proxy-cache/go.sum
+++ b/go-proxy-cache/go.sum
@@ -1,13 +1,9 @@
 github.com/allegro/bigcache/v3 v3.1.0 h1:H2Vp8VOvxcrB91o86fUSVJFqeuz8kpyyB02eH3bSzwk=
 github.com/allegro/bigcache/v3 v3.1.0/go.mod h1:aPyh7jEvrog9zAwx5N7+JUQX5dZTSGpxF1LAR4dr35I=
-github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
-github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
@@ -18,8 +14,8 @@ github.com/go-redis/redis/v8 v8.11.5 h1:AcZZR7igkdvfVmQTPnu9WE37LRrO/YrBH5zWyjDC
 github.com/go-redis/redis/v8 v8.11.5/go.mod h1:gREzHqY1hg6oD9ngVRbLStwAWKhA0FEgq8Jd4h5lpwo=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
-github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
-github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
+github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
+github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=
 github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
 github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
@@ -36,42 +32,38 @@ github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
 github.com/onsi/ginkgo v1.16.5/go.mod h1:+E8gABHa3K6zRBolWtd+ROzc/U5bkGt0FwiG042wbpU=
 github.com/onsi/gomega v1.18.1 h1:M1GfJqGRrBrrGGsbxzV5dqM2U2ApXefZCQpkukxYRLE=
 github.com/onsi/gomega v1.18.1/go.mod h1:0q+aL8jAiMXy9hbwj2mr5GziHiwhAIQpFmmtT5hitRs=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_golang v1.23.0 h1:ust4zpdl9r4trLY/gSjlm07PuiBq2ynaXXlptpfy8Uc=
-github.com/prometheus/client_golang v1.23.0/go.mod h1:i/o0R9ByOnHX0McrTMTyhYvKE4haaf2mW08I+jGAjEE=
+github.com/prometheus/client_golang v1.23.2 h1:Je96obch5RDVy3FDMndoUsjAhG5Edi49h0RJWRi/o0o=
+github.com/prometheus/client_golang v1.23.2/go.mod h1:Tb1a6LWHB3/SPIzCoaDXI4I8UHKeFTEQ1YCr+0Gyqmg=
 github.com/prometheus/client_model v0.6.2 h1:oBsgwpGs7iVziMvrGhE53c/GrLUsZdHnqNwqPLxwZyk=
 github.com/prometheus/client_model v0.6.2/go.mod h1:y3m2F6Gdpfy6Ut/GBsUqTWZqCUvMVzSfMLjcu6wAwpE=
-github.com/prometheus/common v0.65.0 h1:QDwzd+G1twt//Kwj/Ww6E9FQq1iVMmODnILtW1t2VzE=
-github.com/prometheus/common v0.65.0/go.mod h1:0gZns+BLRQ3V6NdaerOhMbwwRbNh9hkGINtQAsP5GS8=
+github.com/prometheus/common v0.66.1 h1:h5E0h5/Y8niHc5DlaLlWLArTQI7tMrsfQjHV+d9ZoGs=
+github.com/prometheus/common v0.66.1/go.mod h1:gcaUsgf3KfRSwHY4dIMXLPV0K/Wg1oZ8+SbZk/HH/dA=
 github.com/prometheus/procfs v0.16.1 h1:hZ15bTNuirocR6u0JZ6BAHHmwS1p8B4P6MRqxtzMyRg=
 github.com/prometheus/procfs v0.16.1/go.mod h1:teAbpZRB1iIAJYREa1LsoWUXykVXA1KlTmWl8x/U+Is=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
 github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
-github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
-go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
 go.uber.org/mock v0.6.0 h1:hyF9dfmbgIX5EfOdasqLsWD6xqpNZlXblLB/Dbnwv3Y=
 go.uber.org/mock v0.6.0/go.mod h1:KiVJ4BqZJaMj4svdfmHM0AUx4NJYO8ZNpPnZn1Z+BBU=
-go.uber.org/multierr v1.6.0 h1:y6IPFStTAIT5Ytl7/XYmHvzXQ7S3g/IeZW9hyZ5thw4=
-go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
-go.uber.org/zap v1.24.0 h1:FiJd5l1UOLj0wCgbSE0rwwXHzEdAZS6hiiSnxJN/D60=
-go.uber.org/zap v1.24.0/go.mod h1:2kMP+WWQ8aoFoedH3T2sq6iJ2yDWpHbP0f6MQbS9Gkg=
-golang.org/x/net v0.40.0 h1:79Xs7wF06Gbdcg4kdCCIQArK11Z1hr5POQ6+fIYHNuY=
-golang.org/x/net v0.40.0/go.mod h1:y0hY0exeL2Pku80/zKK7tpntoX23cqL3Oa6njdgRtds=
-golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
-golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
-golang.org/x/text v0.25.0 h1:qVyWApTSYLk/drJRO5mDlNYskwQznZmkpV2c8q9zls4=
-golang.org/x/text v0.25.0/go.mod h1:WEdwpYrmk1qmdHvhkSTNPm3app7v4rsT8F2UD6+VHIA=
-google.golang.org/protobuf v1.36.6 h1:z1NpPI8ku2WgiWnf+t9wTPsn6eP1L7ksHUlkfLvd9xY=
-google.golang.org/protobuf v1.36.6/go.mod h1:jduwjTPXsFjZGTmRluh+L6NjiWu7pchiJ2/5YcXBHnY=
+go.uber.org/multierr v1.10.0 h1:S0h4aNzvfcFsC3dRF1jLoaov7oRaKqRGC/pUEJ2yvPQ=
+go.uber.org/multierr v1.10.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
+go.uber.org/zap v1.27.1 h1:08RqriUEv8+ArZRYSTXy1LeBScaMpVSTBhCeaZYfMYc=
+go.uber.org/zap v1.27.1/go.mod h1:GB2qFLM7cTU87MWRP2mPIjqfIDnGu+VIO4V/SdhGo2E=
+go.yaml.in/yaml/v2 v2.4.2 h1:DzmwEr2rDGHl7lsFgAHxmNz/1NlQ7xLIrlN2h5d1eGI=
+go.yaml.in/yaml/v2 v2.4.2/go.mod h1:081UH+NErpNdqlCXm3TtEran0rJZGxAYx9hb/ELlsPU=
+golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
+golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
+golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
+golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
+golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
+google.golang.org/protobuf v1.36.8 h1:xHScyCOEuuwZEc6UtSOvPbAT4zRh0xcNRYekJwfqyMc=
+google.golang.org/protobuf v1.36.8/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
diff --git a/go-proxy-cache/internal/cache/l2/keydb_client.go b/go-proxy-cache/internal/cache/l2/keydb_client.go
index 01602c2..e89f2c8 100644
--- a/go-proxy-cache/internal/cache/l2/keydb_client.go
+++ b/go-proxy-cache/internal/cache/l2/keydb_client.go
@@ -69,7 +69,7 @@ func NewRedisKeyDbClient(keydbCfg *config.KeyDBConfig, keydbURL string, logger *
 	defer cancel()
 
 	if err := client.Ping(ctx).Err(); err != nil {
-		client.Close() // Clean up the client
+		_ = client.Close() // Clean up the client
 		return nil, fmt.Errorf("failed to connect to KeyDB at %s: %w", opts.Addr, err)
 	}
 
diff --git a/go-proxy-cache/internal/cache_rules/config_reader.go b/go-proxy-cache/internal/cache_rules/config_reader.go
index b0efeb4..3532e46 100644
--- a/go-proxy-cache/internal/cache_rules/config_reader.go
+++ b/go-proxy-cache/internal/cache_rules/config_reader.go
@@ -18,7 +18,7 @@ func LoadCacheRulesConfig(rulesPath string, logger *zap.Logger) (interfaces.Cach
 	if err != nil {
 		return nil, fmt.Errorf("failed to open cache rules file: %w", err)
 	}
-	defer file.Close()
+	defer func() { _ = file.Close() }()
 
 	var config CacheRulesConfig
 	decoder := yaml.NewDecoder(file)
diff --git a/go-proxy-cache/internal/cache_rules/config_reader_test.go b/go-proxy-cache/internal/cache_rules/config_reader_test.go
index 9f51a9d..83b412b 100644
--- a/go-proxy-cache/internal/cache_rules/config_reader_test.go
+++ b/go-proxy-cache/internal/cache_rules/config_reader_test.go
@@ -36,7 +36,7 @@ cache_rules:
 `
 
 	tmpFile := createTempYAMLFile(t, validYAML)
-	defer os.Remove(tmpFile)
+	defer func() { _ = os.Remove(tmpFile) }()
 
 	// Test loading the configuration
 	config, err := LoadCacheRulesConfig(tmpFile, logger)
@@ -92,7 +92,7 @@ cache_rules:
 `
 
 	tmpFile := createTempYAMLFile(t, invalidYAML)
-	defer os.Remove(tmpFile)
+	defer func() { _ = os.Remove(tmpFile) }()
 
 	config, err := LoadCacheRulesConfig(tmpFile, logger)
 
@@ -144,7 +144,7 @@ cache_rules:
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
 			tmpFile := createTempYAMLFile(t, tc.yaml)
-			defer os.Remove(tmpFile)
+			defer func() { _ = os.Remove(tmpFile) }()
 
 			config, err := LoadCacheRulesConfig(tmpFile, logger)
 
@@ -261,7 +261,7 @@ cache_rules:
 `
 
 	tmpFile := createTempYAMLFile(t, complexYAML)
-	defer os.Remove(tmpFile)
+	defer func() { _ = os.Remove(tmpFile) }()
 
 	config, err := LoadCacheRulesConfig(tmpFile, logger)
 
@@ -288,7 +288,7 @@ func TestLoadCacheRulesConfig_EmptyFile(t *testing.T) {
 	logger := zaptest.NewLogger(t)
 
 	tmpFile := createTempYAMLFile(t, "")
-	defer os.Remove(tmpFile)
+	defer func() { _ = os.Remove(tmpFile) }()
 
 	config, err := LoadCacheRulesConfig(tmpFile, logger)
 
@@ -313,7 +313,7 @@ cache_rules:
 `
 
 	tmpFile := createTempYAMLFile(t, invalidCacheTypeYAML)
-	defer os.Remove(tmpFile)
+	defer func() { _ = os.Remove(tmpFile) }()
 
 	config, err := LoadCacheRulesConfig(tmpFile, logger)
 
@@ -338,7 +338,7 @@ cache_rules:
 `
 
 	tmpFile := createTempYAMLFile(t, validYAML)
-	defer os.Remove(tmpFile)
+	defer func() { _ = os.Remove(tmpFile) }()
 
 	config, err := LoadCacheRulesConfig(tmpFile, logger)
 
diff --git a/go-proxy-cache/internal/config/config.go b/go-proxy-cache/internal/config/config.go
index f14b118..c8a8df0 100644
--- a/go-proxy-cache/internal/config/config.go
+++ b/go-proxy-cache/internal/config/config.go
@@ -62,7 +62,7 @@ func LoadConfig(configPath string, logger *zap.Logger) (*Config, error) {
 	if err != nil {
 		return nil, fmt.Errorf("failed to open config file: %w", err)
 	}
-	defer file.Close()
+	defer func() { _ = file.Close() }()
 
 	var config Config
 	decoder := yaml.NewDecoder(file)
diff --git a/go-proxy-cache/internal/config/config_test.go b/go-proxy-cache/internal/config/config_test.go
index 1b4ba8e..8e9c0b0 100644
--- a/go-proxy-cache/internal/config/config_test.go
+++ b/go-proxy-cache/internal/config/config_test.go
@@ -51,7 +51,11 @@ multi_cache:
 `
 
 	configFile := createTestConfigFile(t, validConfig)
-	defer os.Remove(configFile)
+	defer func() {
+		if err := os.Remove(configFile); err != nil {
+			t.Logf("failed to remove temp file: %v", err)
+		}
+	}()
 
 	config, err := LoadConfig(configFile, logger)
 	if err != nil {
@@ -98,7 +102,11 @@ keydb:
 `
 
 	configFile := createTestConfigFile(t, minimalConfig)
-	defer os.Remove(configFile)
+	defer func() {
+		if err := os.Remove(configFile); err != nil {
+			t.Logf("failed to remove temp file: %v", err)
+		}
+	}()
 
 	config, err := LoadConfig(configFile, logger)
 	if err != nil {
@@ -139,7 +147,11 @@ bigcache:
 `
 
 	configFile := createTestConfigFile(t, invalidConfig)
-	defer os.Remove(configFile)
+	defer func() {
+		if err := os.Remove(configFile); err != nil {
+			t.Logf("failed to remove temp file: %v", err)
+		}
+	}()
 
 	_, err := LoadConfig(configFile, logger)
 	if err == nil {
diff --git a/go-proxy-cache/internal/httpserver/server.go b/go-proxy-cache/internal/httpserver/server.go
index 1303c28..281e740 100644
--- a/go-proxy-cache/internal/httpserver/server.go
+++ b/go-proxy-cache/internal/httpserver/server.go
@@ -104,7 +104,7 @@ func (s *Server) parseRequest(r *http.Request, v interface{}) error {
 	if err != nil {
 		return err
 	}
-	defer r.Body.Close()
+	defer func() { _ = r.Body.Close() }()
 
 	return json.Unmarshal(body, v)
 }
diff --git a/rpc-health-checker/Dockerfile b/rpc-health-checker/Dockerfile
index 36170ec..8cd4414 100644
--- a/rpc-health-checker/Dockerfile
+++ b/rpc-health-checker/Dockerfile
@@ -1,5 +1,5 @@
 # Build stage
-FROM golang:1.23-alpine AS builder
+FROM golang:1.24-alpine AS builder
 
 WORKDIR /app
 COPY . .
diff --git a/rpc-health-checker/api/server.go b/rpc-health-checker/api/server.go
index a39d3c4..bbc4d89 100644
--- a/rpc-health-checker/api/server.go
+++ b/rpc-health-checker/api/server.go
@@ -91,7 +91,11 @@ func (s *httpServer) loadProviders(w io.Writer, path string) error {
 	if err != nil {
 		return err
 	}
-	defer f.Close()
+	defer func() {
+		if closeErr := f.Close(); closeErr != nil {
+			s.logger.Error("failed to close file", "error", closeErr)
+		}
+	}()
 
 	_, err = io.Copy(w, f)
 	return err
diff --git a/rpc-health-checker/config/chainconfig_test.go b/rpc-health-checker/config/chainconfig_test.go
index 5e52172..94130f2 100644
--- a/rpc-health-checker/config/chainconfig_test.go
+++ b/rpc-health-checker/config/chainconfig_test.go
@@ -32,11 +32,17 @@ func TestLoadChains(t *testing.T) {
 
 	tmpFile, err := os.CreateTemp("", "test-config-*.json")
 	assert.NoError(t, err)
-	defer os.Remove(tmpFile.Name())
+	defer func() {
+		if err := os.Remove(tmpFile.Name()); err != nil {
+			t.Logf("failed to remove temp file: %v", err)
+		}
+	}()
 
 	_, err = tmpFile.WriteString(content)
 	assert.NoError(t, err)
-	tmpFile.Close()
+	if err := tmpFile.Close(); err != nil {
+		t.Fatalf("failed to close temp file: %v", err)
+	}
 
 	t.Run("successful load", func(t *testing.T) {
 		chains, err := LoadChains(tmpFile.Name())
@@ -57,11 +63,17 @@ func TestLoadChains(t *testing.T) {
 	t.Run("invalid json", func(t *testing.T) {
 		invalidFile, err := os.CreateTemp("", "invalid-*.json")
 		assert.NoError(t, err)
-		defer os.Remove(invalidFile.Name())
+		defer func() {
+			if err := os.Remove(invalidFile.Name()); err != nil {
+				t.Logf("failed to remove temp file: %v", err)
+			}
+		}()
 
 		_, err = invalidFile.WriteString("{invalid}")
 		assert.NoError(t, err)
-		invalidFile.Close()
+		if err := invalidFile.Close(); err != nil {
+			t.Fatalf("failed to close temp file: %v", err)
+		}
 
 		_, err = LoadChains(invalidFile.Name())
 		assert.Error(t, err)
@@ -90,11 +102,17 @@ func TestLoadReferenceChains(t *testing.T) {
 
 	tmpFile, err := os.CreateTemp("", "test-ref-config-*.json")
 	assert.NoError(t, err)
-	defer os.Remove(tmpFile.Name())
+	defer func() {
+		if err := os.Remove(tmpFile.Name()); err != nil {
+			t.Logf("failed to remove temp file: %v", err)
+		}
+	}()
 
 	_, err = tmpFile.WriteString(content)
 	assert.NoError(t, err)
-	tmpFile.Close()
+	if err := tmpFile.Close(); err != nil {
+		t.Fatalf("failed to close temp file: %v", err)
+	}
 
 	t.Run("successful load", func(t *testing.T) {
 		chains, err := LoadReferenceChains(tmpFile.Name())
@@ -115,11 +133,17 @@ func TestLoadReferenceChains(t *testing.T) {
 	t.Run("invalid json", func(t *testing.T) {
 		invalidFile, err := os.CreateTemp("", "invalid-ref-*.json")
 		assert.NoError(t, err)
-		defer os.Remove(invalidFile.Name())
+		defer func() {
+			if err := os.Remove(invalidFile.Name()); err != nil {
+				t.Logf("failed to remove temp file: %v", err)
+			}
+		}()
 
 		_, err = invalidFile.WriteString("{invalid}")
 		assert.NoError(t, err)
-		invalidFile.Close()
+		if err := invalidFile.Close(); err != nil {
+			t.Fatalf("failed to close temp file: %v", err)
+		}
 
 		_, err = LoadReferenceChains(invalidFile.Name())
 		assert.Error(t, err)
@@ -128,11 +152,17 @@ func TestLoadReferenceChains(t *testing.T) {
 	t.Run("missing required fields", func(t *testing.T) {
 		invalidFile, err := os.CreateTemp("", "missing-fields-*.json")
 		assert.NoError(t, err)
-		defer os.Remove(invalidFile.Name())
+		defer func() {
+			if err := os.Remove(invalidFile.Name()); err != nil {
+				t.Logf("failed to remove temp file: %v", err)
+			}
+		}()
 
 		_, err = invalidFile.WriteString(`{"chains": [{"name": "ethereum"}]}`)
 		assert.NoError(t, err)
-		invalidFile.Close()
+		if err := invalidFile.Close(); err != nil {
+			t.Fatalf("failed to close temp file: %v", err)
+		}
 
 		_, err = LoadReferenceChains(invalidFile.Name())
 		assert.Error(t, err)
@@ -159,11 +189,17 @@ func TestLoadReferenceChains(t *testing.T) {
 
 		tmpFile, err := os.CreateTemp("", "test-ref-upper-*.json")
 		assert.NoError(t, err)
-		defer os.Remove(tmpFile.Name())
+		defer func() {
+			if err := os.Remove(tmpFile.Name()); err != nil {
+				t.Logf("failed to remove temp file: %v", err)
+			}
+		}()
 
 		_, err = tmpFile.WriteString(content)
 		assert.NoError(t, err)
-		tmpFile.Close()
+		if err := tmpFile.Close(); err != nil {
+			t.Fatalf("failed to close temp file: %v", err)
+		}
 
 		chains, err := LoadReferenceChains(tmpFile.Name())
 		assert.NoError(t, err)
diff --git a/rpc-health-checker/config/configreader_test.go b/rpc-health-checker/config/configreader_test.go
index d3f6fa7..75d5069 100644
--- a/rpc-health-checker/config/configreader_test.go
+++ b/rpc-health-checker/config/configreader_test.go
@@ -68,14 +68,20 @@ func TestReadCheckerConfig(t *testing.T) {
 			if err != nil {
 				t.Fatalf("Failed to create temp file: %v", err)
 			}
-			defer os.Remove(tmpFile.Name())
+			defer func() {
+				if err := os.Remove(tmpFile.Name()); err != nil {
+					t.Logf("failed to remove temp file: %v", err)
+				}
+			}()
 
 			if tt.configJSON != "" {
 				if _, err := tmpFile.WriteString(tt.configJSON); err != nil {
 					t.Fatalf("Failed to write test config: %v", err)
 				}
 			}
-			tmpFile.Close()
+			if err := tmpFile.Close(); err != nil {
+				t.Fatalf("Failed to close temp file: %v", err)
+			}
 
 			// Test ReadCheckerConfig
 			config, err := ReadCheckerConfig(tmpFile.Name())
diff --git a/rpc-health-checker/config/testconfig_test.go b/rpc-health-checker/config/testconfig_test.go
index 820efc6..ad9e7a0 100644
--- a/rpc-health-checker/config/testconfig_test.go
+++ b/rpc-health-checker/config/testconfig_test.go
@@ -25,11 +25,17 @@ func TestReadConfig(t *testing.T) {
 
 	tmpFile, err := os.CreateTemp("", "test-config-*.json")
 	require.NoError(t, err)
-	defer os.Remove(tmpFile.Name())
+	defer func() {
+		if err := os.Remove(tmpFile.Name()); err != nil {
+			t.Logf("failed to remove temp file: %v", err)
+		}
+	}()
 
 	_, err = tmpFile.WriteString(content)
 	require.NoError(t, err)
-	tmpFile.Close()
+	if err := tmpFile.Close(); err != nil {
+		t.Fatalf("Failed to close temp file: %v", err)
+	}
 
 	// Test reading config
 	configs, err := ReadConfig(tmpFile.Name())
diff --git a/rpc-health-checker/e2e/e2e_test.go b/rpc-health-checker/e2e/e2e_test.go
index 6939db1..49bcced 100644
--- a/rpc-health-checker/e2e/e2e_test.go
+++ b/rpc-health-checker/e2e/e2e_test.go
@@ -240,7 +240,9 @@ func (s *E2ETestSuite) TearDownSuite() {
 	if err := s.providerSetup.Close(); err != nil {
 		s.T().Logf("error stopping mock servers: %v", err)
 	}
-	os.RemoveAll(testTempDir)
+	if err := os.RemoveAll(testTempDir); err != nil {
+		s.T().Logf("error removing temp directory: %v", err)
+	}
 }
 
 func (s *E2ETestSuite) writeJSONFile(path string, data interface{}) {
@@ -352,7 +354,11 @@ func (s *E2ETestSuite) TestE2E() {
 	s.Run("HTTP API returns providers", func() {
 		resp, err := http.Get(fmt.Sprintf("http://localhost:%s/providers", testPort))
 		s.NoError(err)
-		defer resp.Body.Close()
+		defer func() {
+			if err := resp.Body.Close(); err != nil {
+				s.T().Logf("error closing response body: %v", err)
+			}
+		}()
 
 		s.Equal(http.StatusOK, resp.StatusCode)
 
diff --git a/rpc-health-checker/go.mod b/rpc-health-checker/go.mod
index ee78fe4..c8361b3 100644
--- a/rpc-health-checker/go.mod
+++ b/rpc-health-checker/go.mod
@@ -1,34 +1,31 @@
 module github.com/status-im/eth-rpc-proxy
 
-go 1.23.0
-
-toolchain go1.23.9
+go 1.24.0
 
 require (
-	github.com/go-playground/validator/v10 v10.23.0
-	github.com/prometheus/client_golang v1.20.5
-	github.com/stretchr/testify v1.10.0
+	github.com/go-playground/validator/v10 v10.30.1
+	github.com/prometheus/client_golang v1.23.2
+	github.com/stretchr/testify v1.11.1
 )
 
 require (
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.12 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/klauspost/compress v1.17.9 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_model v0.6.1 // indirect
-	github.com/prometheus/common v0.55.0 // indirect
-	github.com/prometheus/procfs v0.15.1 // indirect
-	golang.org/x/crypto v0.36.0 // indirect
-	golang.org/x/net v0.38.0 // indirect
-	golang.org/x/sys v0.31.0 // indirect
-	golang.org/x/text v0.23.0 // indirect
-	google.golang.org/protobuf v1.34.2 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.66.1 // indirect
+	github.com/prometheus/procfs v0.16.1 // indirect
+	go.yaml.in/yaml/v2 v2.4.2 // indirect
+	golang.org/x/crypto v0.46.0 // indirect
+	golang.org/x/sys v0.39.0 // indirect
+	golang.org/x/text v0.32.0 // indirect
+	google.golang.org/protobuf v1.36.8 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/rpc-health-checker/go.sum b/rpc-health-checker/go.sum
index c746f0c..ad9e7e7 100644
--- a/rpc-health-checker/go.sum
+++ b/rpc-health-checker/go.sum
@@ -5,20 +5,20 @@ github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XL
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
-github.com/gabriel-vasile/mimetype v1.4.3/go.mod h1:d8uq/6HKRL6CGdk+aubisF/M5GcPfT7nKyLpA0lbSSk=
+github.com/gabriel-vasile/mimetype v1.4.12 h1:e9hWvmLYvtp846tLHam2o++qitpguFiYCKbn0w9jyqw=
+github.com/gabriel-vasile/mimetype v1.4.12/go.mod h1:d+9Oxyo1wTzWdyVUPMmXFvp4F9tea18J8ufA774AB3s=
 github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
 github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
 github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
 github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
 github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
 github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
-github.com/go-playground/validator/v10 v10.23.0 h1:/PwmTwZhS0dPkav3cdK9kV1FsAmrL8sThn8IHr/sO+o=
-github.com/go-playground/validator/v10 v10.23.0/go.mod h1:dbuPbCMFw/DrkbEynArYaCwl3amGuJotoKCe95atGMM=
-github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
-github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/klauspost/compress v1.17.9 h1:6KIumPrER1LHsvBVuDa0r5xaG0Es51mhhB9BQB2qeMA=
-github.com/klauspost/compress v1.17.9/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
+github.com/go-playground/validator/v10 v10.30.1 h1:f3zDSN/zOma+w6+1Wswgd9fLkdwy06ntQJp0BBvFG0w=
+github.com/go-playground/validator/v10 v10.30.1/go.mod h1:oSuBIQzuJxL//3MelwSLD5hc2Tu889bF0Idm9Dg26cM=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
+github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
+github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
@@ -31,28 +31,30 @@ github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_golang v1.20.5 h1:cxppBPuYhUnsO6yo/aoRol4L7q7UFfdm+bR9r+8l63Y=
-github.com/prometheus/client_golang v1.20.5/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
-github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
-github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
-github.com/prometheus/common v0.55.0 h1:KEi6DK7lXW/m7Ig5i47x0vRzuBsHuvJdi5ee6Y3G1dc=
-github.com/prometheus/common v0.55.0/go.mod h1:2SECS4xJG1kd8XF9IcM1gMX6510RAEL65zxzNImwdc8=
-github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc=
-github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk=
+github.com/prometheus/client_golang v1.23.2 h1:Je96obch5RDVy3FDMndoUsjAhG5Edi49h0RJWRi/o0o=
+github.com/prometheus/client_golang v1.23.2/go.mod h1:Tb1a6LWHB3/SPIzCoaDXI4I8UHKeFTEQ1YCr+0Gyqmg=
+github.com/prometheus/client_model v0.6.2 h1:oBsgwpGs7iVziMvrGhE53c/GrLUsZdHnqNwqPLxwZyk=
+github.com/prometheus/client_model v0.6.2/go.mod h1:y3m2F6Gdpfy6Ut/GBsUqTWZqCUvMVzSfMLjcu6wAwpE=
+github.com/prometheus/common v0.66.1 h1:h5E0h5/Y8niHc5DlaLlWLArTQI7tMrsfQjHV+d9ZoGs=
+github.com/prometheus/common v0.66.1/go.mod h1:gcaUsgf3KfRSwHY4dIMXLPV0K/Wg1oZ8+SbZk/HH/dA=
+github.com/prometheus/procfs v0.16.1 h1:hZ15bTNuirocR6u0JZ6BAHHmwS1p8B4P6MRqxtzMyRg=
+github.com/prometheus/procfs v0.16.1/go.mod h1:teAbpZRB1iIAJYREa1LsoWUXykVXA1KlTmWl8x/U+Is=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
 github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
-github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
-github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-golang.org/x/crypto v0.36.0 h1:AnAEvhDddvBdpY+uR+MyHmuZzzNqXSe/GvuDeob5L34=
-golang.org/x/crypto v0.36.0/go.mod h1:Y4J0ReaxCR1IMaabaSMugxJES1EpwhBHhv2bDHklZvc=
-golang.org/x/net v0.38.0 h1:vRMAPTMaeGqVhG5QyLJHqNDwecKTomGeqbnfZyKlBI8=
-golang.org/x/net v0.38.0/go.mod h1:ivrbrMbzFq5J41QOQh0siUuly180yBYtLp+CKbEaFx8=
-golang.org/x/sys v0.31.0 h1:ioabZlmFYtWhL+TRYpcnNlLwhyxaM9kWTDEmfnprqik=
-golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
-golang.org/x/text v0.23.0 h1:D71I7dUrlY+VX0gQShAThNGHFxZ13dGLBHQLVl1mJlY=
-golang.org/x/text v0.23.0/go.mod h1:/BLNzu4aZCJ1+kcD0DNRotWKage4q2rGVAg4o22unh4=
-google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
-google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
+go.yaml.in/yaml/v2 v2.4.2 h1:DzmwEr2rDGHl7lsFgAHxmNz/1NlQ7xLIrlN2h5d1eGI=
+go.yaml.in/yaml/v2 v2.4.2/go.mod h1:081UH+NErpNdqlCXm3TtEran0rJZGxAYx9hb/ELlsPU=
+golang.org/x/crypto v0.46.0 h1:cKRW/pmt1pKAfetfu+RCEvjvZkA9RimPbh7bhFjGVBU=
+golang.org/x/crypto v0.46.0/go.mod h1:Evb/oLKmMraqjZ2iQTwDwvCtJkczlDuTmdJXoZVzqU0=
+golang.org/x/sys v0.39.0 h1:CvCKL8MeisomCi6qNZ+wbb0DN9E5AATixKsvNtMoMFk=
+golang.org/x/sys v0.39.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/text v0.32.0 h1:ZD01bjUt1FQ9WJ0ClOL5vxgxOI/sVCNgX1YtKwcY0mU=
+golang.org/x/text v0.32.0/go.mod h1:o/rUWzghvpD5TXrTIBuJU77MTaN0ljMWE47kxGJQ7jY=
+google.golang.org/protobuf v1.36.8 h1:xHScyCOEuuwZEc6UtSOvPbAT4zRh0xcNRYekJwfqyMc=
+google.golang.org/protobuf v1.36.8/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
diff --git a/rpc-health-checker/metrics/metrics.go b/rpc-health-checker/metrics/metrics.go
index 96fc52c..5dac094 100644
--- a/rpc-health-checker/metrics/metrics.go
+++ b/rpc-health-checker/metrics/metrics.go
@@ -78,17 +78,20 @@ func RecordRPCRequest(metrics RPCRequestMetrics) {
 	errCategory := CategorizeError(metrics.RequestErr, metrics.HTTPStatus, metrics.EVMErrorCode)
 
 	// Determine status code based on error type
-	statusCode := "success" // Default for successful requests
-	if errCategory == HTTPError {
+	var statusCode string
+	switch errCategory {
+	case HTTPError:
 		statusCode = fmt.Sprintf("http_%d", metrics.HTTPStatus)
-	} else if errCategory == EVMError {
+	case EVMError:
 		statusCode = fmt.Sprintf("evm_%d", metrics.EVMErrorCode)
-	} else if errCategory == JSONRPCError {
+	case JSONRPCError:
 		statusCode = "jsonrpc_error"
-	} else if errCategory == NetworkError {
+	case NetworkError:
 		statusCode = "network_error"
-	} else if errCategory == UnknownError {
+	case UnknownError:
 		statusCode = "unknown_error"
+	default:
+		statusCode = "success"
 	}
 
 	rpcRequestsTotal.WithLabelValues(
diff --git a/rpc-health-checker/provider/provider_utils.go b/rpc-health-checker/provider/provider_utils.go
index 7fb7d04..ce8374c 100644
--- a/rpc-health-checker/provider/provider_utils.go
+++ b/rpc-health-checker/provider/provider_utils.go
@@ -18,7 +18,9 @@ func ReadRpcProviders(filename string) ([]RPCProvider, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer f.Close()
+	defer func() {
+		_ = f.Close()
+	}()
 
 	var pf RPCProvidersFile
 	if err := json.NewDecoder(f).Decode(&pf); err != nil {
@@ -49,7 +51,9 @@ func WriteRpcProviders(filename string, providers []RPCProvider) error {
 	if err != nil {
 		return err
 	}
-	defer f.Close()
+	defer func() {
+		_ = f.Close()
+	}()
 
 	encoder := json.NewEncoder(f)
 	encoder.SetIndent("", "  ") // For readability
diff --git a/rpc-health-checker/provider/provider_utils_test.go b/rpc-health-checker/provider/provider_utils_test.go
index c47ad79..1f86b64 100644
--- a/rpc-health-checker/provider/provider_utils_test.go
+++ b/rpc-health-checker/provider/provider_utils_test.go
@@ -84,14 +84,18 @@ func (suite *RpcProviderTestSuite) SetupSuite() {
 // TearDownSuite is executed after all tests in the suite
 func (suite *RpcProviderTestSuite) TearDownSuite() {
 	// Remove the temporary directory and all its contents
-	os.RemoveAll(suite.tempDir)
+	if err := os.RemoveAll(suite.tempDir); err != nil {
+		suite.T().Logf("failed to remove temp directory: %v", err)
+	}
 }
 
 // SetupTest is executed before each test
 func (suite *RpcProviderTestSuite) SetupTest() {
 	// Clear the file before each test if it exists
 	if _, err := os.Stat(suite.tempFile); err == nil {
-		os.Remove(suite.tempFile)
+		if err := os.Remove(suite.tempFile); err != nil {
+			suite.T().Logf("failed to remove temp file: %v", err)
+		}
 	}
 }
 
diff --git a/rpc-health-checker/requests_runner/method_caller_impl.go b/rpc-health-checker/requests_runner/method_caller_impl.go
index 568710e..90f1768 100644
--- a/rpc-health-checker/requests_runner/method_caller_impl.go
+++ b/rpc-health-checker/requests_runner/method_caller_impl.go
@@ -103,7 +103,9 @@ func (r *RequestsRunner) CallMethod(
 			ElapsedTime: time.Since(startTime),
 		}
 	}
-	defer resp.Body.Close()
+	defer func() {
+		_ = resp.Body.Close()
+	}()
 
 	httpStatus = resp.StatusCode