diff --git a/.github/workflows/check-generated-tests-in-sync.yml b/.github/workflows/check-generated-tests-in-sync.yml
index e48252a..3666687 100644
--- a/.github/workflows/check-generated-tests-in-sync.yml
+++ b/.github/workflows/check-generated-tests-in-sync.yml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
         with:
           submodules: true
 
diff --git a/.github/workflows/check-problem-specs-is-current.yml b/.github/workflows/check-problem-specs-is-current.yml
index 98e4a6f..f6efeea 100644
--- a/.github/workflows/check-problem-specs-is-current.yml
+++ b/.github/workflows/check-problem-specs-is-current.yml
@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
 
       - name: Check problem-specifications is current
         run: bin/check-problem-specs-is-current
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6b24e6f..755f977 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
 
       - name: Setup Node
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e