diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c15160d..9464323 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,23 +22,29 @@ jobs:
             cpu: i386
           - os: macos
             cpu: amd64
+          - os: macos
+            cpu: arm64
           - os: windows
             cpu: amd64
-          #- os: windows
-            #cpu: i386
         branch: [version-1-6, version-2-0, devel]
         include:
           - target:
               os: linux
-            builder: ubuntu-20.04
+            builder: ubuntu-latest
             shell: bash
           - target:
               os: macos
-            builder: macos-12
+              cpu: amd64
+            builder: macos-13
+            shell: bash
+          - target:
+              os: macos
+              cpu: arm64
+            builder: macos-latest
             shell: bash
           - target:
               os: windows
-            builder: windows-2019
+            builder: windows-latest
             shell: msys2 {0}
 
     defaults:
@@ -50,7 +56,7 @@ jobs:
     continue-on-error: ${{ matrix.branch == 'devel' }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install build dependencies (Linux i386)
         if: runner.os == 'Linux' && matrix.target.cpu == 'i386'
@@ -96,7 +102,7 @@ jobs:
       - name: Restore Nim DLLs dependencies (Windows) from cache
         if: runner.os == 'Windows'
         id: windows-dlls-cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: external/dlls-${{ matrix.target.cpu }}
           key: 'dlls-${{ matrix.target.cpu }}'
@@ -120,6 +126,8 @@ jobs:
         run: |
           if [[ '${{ matrix.target.cpu }}' == 'amd64' ]]; then
             PLATFORM=x64
+          elif [[ '${{ matrix.target.cpu }}' == 'arm64' ]]; then
+            PLATFORM=arm64
           else
             PLATFORM=x86
           fi
diff --git a/presto.nimble b/presto.nimble
index 93b8290..8ed9900 100644
--- a/presto.nimble
+++ b/presto.nimble
@@ -11,6 +11,7 @@ requires "nim >= 1.6.0",
          "chronos#head",
          "chronicles",
          "metrics",
+         "results",
          "stew"
 
 let nimc = getEnv("NIMC", "nim") # Which nim compiler to use
@@ -26,10 +27,10 @@ let cfg =
 proc build(args, path: string) =
   exec nimc & " " & lang & " " & cfg & " " & flags & " " & args & " " & path
 
-proc run(args, path: string) =
-  build args & " -r", path
+proc run(path: string) =
+  build " --mm:refc -r", path
   if (NimMajor, NimMinor) > (1, 6):
-    build args & " --mm:refc -r", path
+    build " --mm:orc -r", path
 
 task test, "Runs rest tests":
-  run "", "tests/testall"
+  run "tests/testall"
diff --git a/presto/common.nim b/presto/common.nim
index 31ebb40..b1b56ae 100644
--- a/presto/common.nim
+++ b/presto/common.nim
@@ -10,7 +10,8 @@
 {.push raises: [].}
 
 import chronos/apps/http/[httpcommon, httptable]
-import stew/[results, byteutils], httputils
+import results
+import stew/[byteutils], httputils
 
 export results, httputils, httptable
 
diff --git a/presto/secureserver.nim b/presto/secureserver.nim
index ebf2eef..080343b 100644
--- a/presto/secureserver.nim
+++ b/presto/secureserver.nim
@@ -12,7 +12,7 @@
 import std/options
 import chronos, chronos/apps/http/shttpserver
 import chronicles
-import stew/results
+import results
 import "."/[route, common, segpath, servercommon, serverprivate, agent]
 export options, chronos, shttpserver, servercommon, chronicles, agent
 
diff --git a/presto/segpath.nim b/presto/segpath.nim
index cae0331..f4cdc4d 100644
--- a/presto/segpath.nim
+++ b/presto/segpath.nim
@@ -10,7 +10,8 @@
 {.push raises: [].}
 
 import std/[uri, strutils]
-import stew/[bitops2, results]
+import stew/bitops2
+import results
 import chronos/apps
 import "."/common
 export common, apps
diff --git a/presto/server.nim b/presto/server.nim
index b4415ad..76bfd79 100644
--- a/presto/server.nim
+++ b/presto/server.nim
@@ -12,7 +12,7 @@
 import std/[options, json, strutils]
 import chronos, chronos/apps/http/httpserver
 import chronicles
-import stew/results
+import results
 import "."/[route, common, segpath, servercommon, serverprivate, agent]
 export options, chronos, httpserver, servercommon, chronicles, agent
 
diff --git a/presto/serverprivate.nim b/presto/serverprivate.nim
index 55ce8c1..7fdfafb 100644
--- a/presto/serverprivate.nim
+++ b/presto/serverprivate.nim
@@ -10,7 +10,7 @@
 {.push raises: [].}
 
 import std/[options, strutils]
-import chronos, chronicles, stew/[base10, results]
+import chronos, chronicles, stew/base10, results
 import "."/[route, common, segpath, servercommon]
 
 when defined(metrics):