diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 64aa99d1b4..c2ef53c76a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ on:
 
 env:
   NWAKU_VERSION: "v0.13.0"
-  NODE_JS: "16"
+  NODE_JS: "18"
 
 jobs:
   check:
diff --git a/packages/tests/src/nwaku.ts b/packages/tests/src/nwaku.ts
index c5faecfbc7..a819407469 100644
--- a/packages/tests/src/nwaku.ts
+++ b/packages/tests/src/nwaku.ts
@@ -395,7 +395,7 @@ export class Nwaku {
   }
 
   get rpcUrl(): string {
-    return `http://localhost:${this.rpcPort}/`;
+    return `http://127.0.0.1:${this.rpcPort}/`;
   }
 
   private async rpcCall<T>(