diff --git a/.github/workflows/label-issues.yml b/.github/workflows/label-issues.yml
index 43679e71..4b12dee4 100644
--- a/.github/workflows/label-issues.yml
+++ b/.github/workflows/label-issues.yml
@@ -10,7 +10,7 @@ jobs:
     permissions:
       issues: write
     steps:
-      - uses: actions/github-script@v8
+      - uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8
         with:
           script: |
             github.rest.issues.addLabels({
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f3375388..4e85bfdd 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,6 +9,6 @@ jobs:
     # Ensures default fresh checkout can create containers.
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
     - run: docker compose up --no-start
     - run: docker compose -f docker-compose.yml -f compose-debug.yml up --no-start