diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a8efd12..ddef1d8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        nginx-version: [1.31.3]
+        nginx-version: [1.31.4]
 
     env:
       JOBS: 3
@@ -23,7 +23,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v3
+      uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
     - name: Install dependencies
       run: |