diff --git a/tests/ethertest.nim b/tests/ethertest.nim
index fb334198..dee43b3a 100644
--- a/tests/ethertest.nim
+++ b/tests/ethertest.nim
@@ -18,7 +18,7 @@ template ethersuite*(name, body) =
 
     setup:
       ethProvider = JsonRpcProvider.new(
-        "http://localhost:8545",
+        "http://127.0.0.1:8545",
         pollingInterval = chronos.milliseconds(100)
       )
       snapshot = await send(ethProvider, "evm_snapshot")
diff --git a/tests/integration/multinodes.nim b/tests/integration/multinodes.nim
index 9779c3e8..55d672f7 100644
--- a/tests/integration/multinodes.nim
+++ b/tests/integration/multinodes.nim
@@ -196,7 +196,7 @@ template multinodesuite*(name: string, body: untyped) =
     proc startClientNode(conf: CodexConfig): Future[NodeProcess] {.async.} =
       let clientIdx = clients().len
       var config = conf
-      config.addCliOption(StartUpCmd.persistence, "--eth-provider", "http://localhost:8545")
+      config.addCliOption(StartUpCmd.persistence, "--eth-provider", "http://127.0.0.1:8545")
       config.addCliOption(StartUpCmd.persistence, "--eth-account", $accounts[running.len])
       return await newCodexProcess(clientIdx, config, Role.Client)
 
@@ -204,7 +204,7 @@ template multinodesuite*(name: string, body: untyped) =
       let providerIdx = providers().len
       var config = conf
       config.addCliOption("--bootstrap-node", bootstrap)
-      config.addCliOption(StartUpCmd.persistence, "--eth-provider", "http://localhost:8545")
+      config.addCliOption(StartUpCmd.persistence, "--eth-provider", "http://127.0.0.1:8545")
       config.addCliOption(StartUpCmd.persistence, "--eth-account", $accounts[running.len])
       config.addCliOption(PersistenceCmd.prover, "--circom-r1cs",
         "vendor/codex-contracts-eth/verifier/networks/hardhat/proof_main.r1cs")
@@ -219,7 +219,7 @@ template multinodesuite*(name: string, body: untyped) =
       let validatorIdx = validators().len
       var config = conf
       config.addCliOption("--bootstrap-node", bootstrap)
-      config.addCliOption(StartUpCmd.persistence, "--eth-provider", "http://localhost:8545")
+      config.addCliOption(StartUpCmd.persistence, "--eth-provider", "http://127.0.0.1:8545")
       config.addCliOption(StartUpCmd.persistence, "--eth-account", $accounts[running.len])
       config.addCliOption(StartUpCmd.persistence, "--validator")
 
@@ -268,7 +268,7 @@ template multinodesuite*(name: string, body: untyped) =
         # Do not use websockets, but use http and polling to stop subscriptions
         # from being removed after 5 minutes
         ethProvider = JsonRpcProvider.new(
-          "http://localhost:8545",
+          "http://127.0.0.1:8545",
           pollingInterval = chronos.milliseconds(100)
         )
         # if hardhat was NOT started by the test, take a snapshot so it can be
diff --git a/tests/integration/twonodes.nim b/tests/integration/twonodes.nim
index 1cc2ae89..69773c81 100644
--- a/tests/integration/twonodes.nim
+++ b/tests/integration/twonodes.nim
@@ -43,7 +43,7 @@ template twonodessuite*(name: string, debug1, debug2: string, body) =
         "--circom-r1cs=tests/circuits/fixtures/proof_main.r1cs",
         "--circom-wasm=tests/circuits/fixtures/proof_main.wasm",
         "--circom-zkey=tests/circuits/fixtures/proof_main.zkey",
-        "--eth-provider=http://localhost:8545",
+        "--eth-provider=http://127.0.0.1:8545",
         "--eth-account=" & $account1
       ]
 
@@ -68,7 +68,7 @@ template twonodessuite*(name: string, debug1, debug2: string, body) =
         "--circom-r1cs=tests/circuits/fixtures/proof_main.r1cs",
         "--circom-wasm=tests/circuits/fixtures/proof_main.wasm",
         "--circom-zkey=tests/circuits/fixtures/proof_main.zkey",
-        "--eth-provider=http://localhost:8545",
+        "--eth-provider=http://127.0.0.1:8545",
         "--eth-account=" & $account2
       ]
 
diff --git a/tests/tools/cirdl/testcirdl.nim b/tests/tools/cirdl/testcirdl.nim
index 5972fc05..a4fd0fc0 100644
--- a/tests/tools/cirdl/testcirdl.nim
+++ b/tests/tools/cirdl/testcirdl.nim
@@ -14,7 +14,7 @@ suite "tools/cirdl":
   test "circuit download tool":
     let
       circuitPath = "testcircuitpath"
-      rpcEndpoint = "http://localhost:8545"
+      rpcEndpoint = "http://127.0.0.1:8545"
       marketplaceAddress = Marketplace.address
 
     discard existsOrCreateDir(circuitPath)