diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3355511c..4b532bbf 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -33,7 +33,7 @@ jobs:
     runs-on: ${{ matrix.builder }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # 2.4.0
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846 # 2.4.0
 
       - name: Install Nim
         uses: jiro4989/setup-nim-action@5f0615c23aa478a77d895b5044748a62b5397eca # 1.3.32
diff --git a/.github/workflows/markdownlint.yml b/.github/workflows/markdownlint.yml
index 0994cbd0..5c0449e9 100644
--- a/.github/workflows/markdownlint.yml
+++ b/.github/workflows/markdownlint.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # 2.4.0
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846 # 2.4.0
 
       - name: Run markdownlint
         uses: DavidAnson/markdownlint-cli2-action@b3c3b40b95c18bfa5363f6821764398c7149ad04 # 5.0.0
diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
index d4253c88..b0d52265 100644
--- a/.github/workflows/shellcheck.yml
+++ b/.github/workflows/shellcheck.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # 2.4.0
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846 # 2.4.0
 
       - name: Run shellcheck
         uses: ludeeus/action-shellcheck@94e0aab03ca135d11a35e5bfc14e6746dc56e7e9 # 1.1.0
diff --git a/.github/workflows/sync-labels.yml b/.github/workflows/sync-labels.yml
index 095884ad..c3e277eb 100644
--- a/.github/workflows/sync-labels.yml
+++ b/.github/workflows/sync-labels.yml
@@ -15,7 +15,7 @@ jobs:
     name: Sync labels
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+      - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
       - uses: micnncim/action-label-syncer@3abd5ab72fda571e69fffd97bd4e0033dd5f495c
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 5331a9e7..28bfea99 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -38,7 +38,7 @@ jobs:
     runs-on: ${{ matrix.builder }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # 2.4.0
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846 # 2.4.0
 
       - name: Install Nim
         uses: jiro4989/setup-nim-action@5f0615c23aa478a77d895b5044748a62b5397eca # 1.3.32