diff --git a/.github/workflows/exercises.yml b/.github/workflows/exercises.yml
index 57f96b34..d8c38b45 100644
--- a/.github/workflows/exercises.yml
+++ b/.github/workflows/exercises.yml
@@ -27,7 +27,7 @@ jobs:
 
     steps:
       - name: Checkout exercism/nim
-        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
 
       - name: Install Nim (devel)
         if: matrix.nim == 'devel'
diff --git a/.github/workflows/lint-whitespace.yml b/.github/workflows/lint-whitespace.yml
index 9fa1012f..9f2c076d 100644
--- a/.github/workflows/lint-whitespace.yml
+++ b/.github/workflows/lint-whitespace.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
 
       - name: Check that every file has no trailing whitespace, and exactly one final newline
         run: ./.github/bin/lint-whitespace
diff --git a/.github/workflows/markdownlint.yml b/.github/workflows/markdownlint.yml
index 82f592d1..38cad5f9 100644
--- a/.github/workflows/markdownlint.yml
+++ b/.github/workflows/markdownlint.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
 
       - name: Run markdownlint
         uses: DavidAnson/markdownlint-cli2-action@db43aef879112c3119a410d69f66701e0d530809
diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
index 44e3ede7..9e811e52 100644
--- a/.github/workflows/shellcheck.yml
+++ b/.github/workflows/shellcheck.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
 
       - name: Run shellcheck
         uses: ludeeus/action-shellcheck@00cae500b08a931fb5698e11e79bfbd38e612a38
diff --git a/.github/workflows/uuids.yml b/.github/workflows/uuids.yml
index f872bc76..3a089756 100644
--- a/.github/workflows/uuids.yml
+++ b/.github/workflows/uuids.yml
@@ -8,7 +8,7 @@ jobs:
       NIM_VERSION: '2.0.0'
 
     steps:
-    - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
 
     - name: Get the versions of the installed GCC and OpenSSL
       run: |