diff --git a/.github/workflows/macos_python.yml b/.github/workflows/macos_python.yml
index 90e6fb44bd6b0c..b38b78cfc42226 100644
--- a/.github/workflows/macos_python.yml
+++ b/.github/workflows/macos_python.yml
@@ -24,7 +24,7 @@ jobs:
     name: gcc with clang
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
     - uses: actions/setup-python@v2
       with:
         python-version: 3.9
@@ -39,7 +39,7 @@ jobs:
     runs-on: macos-latest
     timeout-minutes: 700
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
     - uses: actions/setup-python@v2
       with:
         python-version: 3.9
@@ -52,7 +52,7 @@ jobs:
     name: scipy, mpl, pd
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
     - uses: actions/setup-python@v2
       with:
         python-version: 3.9
@@ -67,7 +67,7 @@ jobs:
     name: mpi4py, petsc4py
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
     - uses: actions/setup-python@v2
       with:
         python-version: 3.9
diff --git a/.github/workflows/unit_tests.yaml b/.github/workflows/unit_tests.yaml
index 32b1baf39a5e81..acb39fad3ff215 100644
--- a/.github/workflows/unit_tests.yaml
+++ b/.github/workflows/unit_tests.yaml
@@ -15,7 +15,7 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
     - uses: actions/setup-python@v2
       with:
         python-version: 3.9
@@ -31,7 +31,7 @@ jobs:
   style:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
       with:
         fetch-depth: 0
     - uses: actions/setup-python@v2
@@ -52,7 +52,7 @@ jobs:
   documentation:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
     - uses: actions/setup-python@v2
       with:
         python-version: 3.9
@@ -77,7 +77,7 @@ jobs:
       packages: ${{ steps.filter.outputs.packages }}
       with_coverage: ${{ steps.coverage.outputs.with_coverage }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
       if: ${{ github.event_name == 'push' }}
       with:
         fetch-depth: 0
@@ -119,7 +119,7 @@ jobs:
         python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9]
         concretizer: ['original', 'clingo']
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
       with:
         fetch-depth: 0
     - uses: actions/setup-python@v2
@@ -194,7 +194,7 @@ jobs:
     needs: [ validate, style, documentation, changes ]
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
       with:
         fetch-depth: 0
     - uses: actions/setup-python@v2
@@ -284,7 +284,7 @@ jobs:
           dnf install -y \
               bzip2 curl file gcc-c++ gcc gcc-gfortran git gnupg2 gzip \
               make patch tcl unzip which xz
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
     - name: Setup repo and non-root user
       run: |
           git --version
@@ -302,7 +302,7 @@ jobs:
     needs: [ validate, style, documentation, changes ]
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
       with:
         fetch-depth: 0
     - uses: actions/setup-python@v2
@@ -365,7 +365,7 @@ jobs:
       matrix:
         python-version: [3.8]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
       with:
         fetch-depth: 0
     - uses: actions/setup-python@v2