diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
index d40bfeb..5496155 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/node.js.yml
@@ -20,9 +20,9 @@ jobs:
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v6.3.0
+      uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
       with:
         node-version: ${{ matrix.node-version }}
     - run: npm install
diff --git a/.github/workflows/publish-npm.yml b/.github/workflows/publish-npm.yml
index ed79df6..856c798 100644
--- a/.github/workflows/publish-npm.yml
+++ b/.github/workflows/publish-npm.yml
@@ -10,10 +10,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
 
       - name: Setup Node
-        uses: actions/setup-node@v6.3.0
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
           node-version: "24"
           registry-url: "https://registry.npmjs.org"