diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1beeffc..d47c8f9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,7 +18,7 @@ jobs:
           sudo mv terraform /usr/local/bin
           rm *
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
       - name: Validate examples terraform v${{ matrix.tf-version }}
         run: make examples
   build:
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
index 42f76b8..4e689c1 100644
--- a/.github/workflows/release-please.yml
+++ b/.github/workflows/release-please.yml
@@ -13,7 +13,7 @@ jobs:
   release-please:
     runs-on: ubuntu-latest
     steps:
-      - uses: googleapis/release-please-action@v4
+      - uses: googleapis/release-please-action@a02a34c4d625f9be7cb89156071d8567266a2445 # v4
         with:
           # this assumes that you have created a personal access token
           # (PAT) and configured it as a GitHub action secret named