diff --git a/.github/workflows/autofix.yml b/.github/workflows/autofix.yml
index 6f7d4dd..1bd1f88 100644
--- a/.github/workflows/autofix.yml
+++ b/.github/workflows/autofix.yml
@@ -5,9 +5,9 @@ jobs:
   autofix:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
       - run: npm i -fg corepack && corepack enable
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6
         with: { node-version: lts/*, cache: "pnpm" }
       - run: pnpm install
       - run: pnpm fmt
diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 713cce7..6301d0b 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -4,9 +4,9 @@ jobs:
   checks:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
       - run: npm i -fg corepack && corepack enable
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6
         with: { node-version: lts/*, cache: "pnpm" }
       - run: pnpm install
       - run: pnpm typecheck