diff --git a/.github/workflows/devcontainer-smoke.yml b/.github/workflows/devcontainer-smoke.yml
index eeab5bd..a6c3838 100644
--- a/.github/workflows/devcontainer-smoke.yml
+++ b/.github/workflows/devcontainer-smoke.yml
@@ -18,16 +18,16 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       - name: Build devcontainer
-        uses: devcontainers/ci@v0.3
+        uses: devcontainers/ci@8bf61b26e9c3a98f69cb6ce2f88d24ff59b785c6 # v0.3
         with:
           push: never
           runCmd: echo "container up"
 
       - name: Verify Terraform in devcontainer
-        uses: devcontainers/ci@v0.3
+        uses: devcontainers/ci@8bf61b26e9c3a98f69cb6ce2f88d24ff59b785c6 # v0.3
         with:
           push: never
           runCmd: |