diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9c520b0..03e6ac9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
 
       - uses: actions/setup-go@v5
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c39c2e5..59e00f1 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,7 +12,7 @@ jobs:
   build-and-release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
 
       - uses: actions/setup-go@v5
         with: