diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index d1ec1a81..60c0ad89 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+      uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/pylint-examples.yml b/.github/workflows/pylint-examples.yml
index 81cf5c82..b623346b 100644
--- a/.github/workflows/pylint-examples.yml
+++ b/.github/workflows/pylint-examples.yml
@@ -38,7 +38,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout Melting Pot
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
 
       - name: Install examples
         uses: ./.github/actions/install-examples
diff --git a/.github/workflows/pylint-meltingpot.yml b/.github/workflows/pylint-meltingpot.yml
index 6aebfab5..d7597e33 100644
--- a/.github/workflows/pylint-meltingpot.yml
+++ b/.github/workflows/pylint-meltingpot.yml
@@ -34,7 +34,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout Melting Pot
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
 
       - name: Install Melting Pot
         uses: ./.github/actions/install-meltingpot
diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index 606c43de..fa7bc2c6 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -31,7 +31,7 @@ jobs:
 
     steps:
       - name: Checkout Melting Pot
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
 
       - name: Build source distribution
         run: python setup.py sdist
diff --git a/.github/workflows/pytype-examples.yml b/.github/workflows/pytype-examples.yml
index 3fa6aac3..99b90112 100644
--- a/.github/workflows/pytype-examples.yml
+++ b/.github/workflows/pytype-examples.yml
@@ -38,7 +38,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout Melting Pot
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
 
       - name: Install examples
         uses: ./.github/actions/install-examples
diff --git a/.github/workflows/pytype-meltingpot.yml b/.github/workflows/pytype-meltingpot.yml
index 30949143..cb52ceeb 100644
--- a/.github/workflows/pytype-meltingpot.yml
+++ b/.github/workflows/pytype-meltingpot.yml
@@ -34,7 +34,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout Melting Pot
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
 
       - name: Install Melting Pot
         uses: ./.github/actions/install-meltingpot
diff --git a/.github/workflows/scorecards-analysis.yml b/.github/workflows/scorecards-analysis.yml
index eeba9353..ab460c27 100644
--- a/.github/workflows/scorecards-analysis.yml
+++ b/.github/workflows/scorecards-analysis.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/sdist-test.yml b/.github/workflows/sdist-test.yml
index 24485f07..6eeab8ae 100644
--- a/.github/workflows/sdist-test.yml
+++ b/.github/workflows/sdist-test.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout Melting Pot
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
 
       - name: Build source distribution
         run: python setup.py sdist
diff --git a/.github/workflows/test-examples.yml b/.github/workflows/test-examples.yml
index 7083c63f..1f52f1a4 100644
--- a/.github/workflows/test-examples.yml
+++ b/.github/workflows/test-examples.yml
@@ -38,7 +38,7 @@ jobs:
     timeout-minutes: 90
     steps:
       - name: Checkout Melting Pot
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
 
       - name: Install examples
         uses: ./.github/actions/install-examples
diff --git a/.github/workflows/test-meltingpot.yml b/.github/workflows/test-meltingpot.yml
index b29a5691..05799202 100644
--- a/.github/workflows/test-meltingpot.yml
+++ b/.github/workflows/test-meltingpot.yml
@@ -44,7 +44,7 @@ jobs:
           - '3.11'
     steps:
       - name: Checkout Melting Pot
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
       - name: Install Melting Pot
         uses: ./.github/actions/install-meltingpot
         with: