diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 86faca6..035539d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,8 +31,8 @@ jobs:
     name: Integration tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
-      - uses: actions/setup-go@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+      - uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417
         with:
           go-version-file: go.mod
       - name: Run integration tests
@@ -45,7 +45,7 @@ jobs:
       image: renovate/renovate:latest
       options: --user root # root is needed for checkout to work
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - name: Validate Renovate config
         run: renovate-config-validator --strict
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d30fefc..96c50ef 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -39,7 +39,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           fetch-depth: 0
       - name: Prepare Release
@@ -71,7 +71,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           fetch-depth: 0
       - name: Prepare Release