diff --git a/.github/workflows/builder.yml b/.github/workflows/builder.yml
index 9746c578b..a10b09d6b 100644
--- a/.github/workflows/builder.yml
+++ b/.github/workflows/builder.yml
@@ -49,7 +49,7 @@ jobs:
       requirements: ${{ steps.requirements.outputs.changed }}
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
         with:
           fetch-depth: 0
 
@@ -84,7 +84,7 @@ jobs:
         arch: ${{ fromJson(needs.init.outputs.architectures) }}
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
         with:
           fetch-depth: 0
 
@@ -145,7 +145,7 @@ jobs:
     steps:
       - name: Checkout the repository
         if: needs.init.outputs.publish == 'true'
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
         with:
           fetch-depth: 0
 
@@ -171,7 +171,7 @@ jobs:
     steps:
       - name: Checkout the repository
         if: needs.init.outputs.publish == 'true'
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
 
       - name: Initialize git
         if: needs.init.outputs.publish == 'true'
@@ -195,7 +195,7 @@ jobs:
     needs: ["build", "codenotary", "init"]
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
 
       - name: Build the Supervisor
         if: needs.init.outputs.publish != 'true'
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d999049c4..41b23ce4d 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -22,7 +22,7 @@ jobs:
     name: Prepare Python ${{ matrix.python-version }} dependencies
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set up Python ${{ matrix.python-version }}
         id: python
         uses: actions/setup-python@v2.2.2
@@ -66,7 +66,7 @@ jobs:
     needs: prepare
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         uses: actions/setup-python@v2.2.2
         id: python
@@ -95,7 +95,7 @@ jobs:
     needs: prepare
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Register hadolint problem matcher
         run: |
           echo "::add-matcher::.github/workflows/matchers/hadolint.json"
@@ -110,7 +110,7 @@ jobs:
     needs: prepare
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         uses: actions/setup-python@v2.2.2
         id: python
@@ -154,7 +154,7 @@ jobs:
     needs: prepare
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         uses: actions/setup-python@v2.2.2
         id: python
@@ -186,7 +186,7 @@ jobs:
     needs: prepare
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         uses: actions/setup-python@v2.2.2
         id: python
@@ -227,7 +227,7 @@ jobs:
     needs: prepare
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         uses: actions/setup-python@v2.2.2
         id: python
@@ -271,7 +271,7 @@ jobs:
     needs: prepare
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         uses: actions/setup-python@v2.2.2
         id: python
@@ -303,7 +303,7 @@ jobs:
     needs: prepare
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         uses: actions/setup-python@v2.2.2
         id: python
@@ -347,7 +347,7 @@ jobs:
     name: Run tests Python ${{ matrix.python-version }}
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2.2.2
         id: python
@@ -405,7 +405,7 @@ jobs:
     needs: pytest
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         uses: actions/setup-python@v2.2.2
         id: python
diff --git a/.github/workflows/release-drafter.yml b/.github/workflows/release-drafter.yml
index 2f3586020..042f96258 100644
--- a/.github/workflows/release-drafter.yml
+++ b/.github/workflows/release-drafter.yml
@@ -11,7 +11,7 @@ jobs:
     name: Release Drafter
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/sentry.yaml b/.github/workflows/sentry.yaml
index a4e483c1b..681ddefff 100644
--- a/.github/workflows/sentry.yaml
+++ b/.github/workflows/sentry.yaml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Sentry Release
         uses: getsentry/action-release@v1.1.5
         env: