diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 85f03a0..714c025 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: windows-latest
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.3
 
       - name: Validate copilot-on-toast.json is valid JSON
         shell: pwsh
diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index 6d7843e..299ac6e 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -22,7 +22,7 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.3
       - uses: withastro/action@v6
         with:
           path: ./docs