diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 19e4ce6..bf1c303 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
   test-defaults:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.2
         with:
           persist-credentials: false
       - name: Create .tool-versions file
@@ -27,7 +27,7 @@ jobs:
   test-inputs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.2
         with:
           persist-credentials: false
       - uses: ./
diff --git a/.github/workflows/update-main-version.yml b/.github/workflows/update-main-version.yml
index 8fe920d..f9481b9 100644
--- a/.github/workflows/update-main-version.yml
+++ b/.github/workflows/update-main-version.yml
@@ -15,7 +15,7 @@ jobs:
       contents: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.2
         with:
           fetch-depth: 0
           persist-credentials: true