diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d57b0f6..010e8cd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,9 +14,11 @@ jobs:
         working-directory: web
 
     steps:
-      - uses: actions/checkout@v6
+      # actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
-      - uses: actions/setup-node@v6
+      # actions/setup-node@v6
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e
         with:
           node-version: 20
           cache: npm
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c6f70e1..5ee5c80 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,10 +10,12 @@ jobs:
   python-smoke:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      # actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        # actions/setup-python@v6
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: "3.11"
 
@@ -29,10 +31,12 @@ jobs:
       run:
         working-directory: web
     steps:
-      - uses: actions/checkout@v6
+      # actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Set up Node.js
-        uses: actions/setup-node@v6
+        # actions/setup-node@v6
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e
         with:
           node-version: "20"
           cache: "npm"