diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 1cbaf83..f693aac 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.3
 
       - name: Install the latest version of uv
         uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0