diff --git a/.github/workflows/bootstrap.yml b/.github/workflows/bootstrap.yml
index eebdd9aa53922a..69b5d67a31db53 100644
--- a/.github/workflows/bootstrap.yml
+++ b/.github/workflows/bootstrap.yml
@@ -28,7 +28,7 @@ jobs:
               bzip2 curl file gcc-c++ gcc gcc-gfortran git gnupg2 gzip \
               make patch unzip which xz python3 python3-devel tree \
               cmake bison bison-devel libstdc++-static
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
       - name: Setup repo and non-root user
         run: |
           git --version
@@ -58,7 +58,7 @@ jobs:
               bzip2 curl file g++ gcc gfortran git gnupg2 gzip \
               make patch unzip xz-utils python3 python3-dev tree \
               cmake bison
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
       - name: Setup repo and non-root user
         run: |
           git --version
@@ -86,7 +86,7 @@ jobs:
               bzip2 curl file gcc-c++ gcc gcc-fortran tar git gpg2 gzip \
               make patch unzip which xz python3 python3-devel tree \
               cmake bison
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
       - name: Setup repo and non-root user
         run: |
           git --version
@@ -106,7 +106,7 @@ jobs:
       - name: Install dependencies
         run: |
           brew install cmake bison@2.7 tree
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
       - name: Bootstrap clingo
         run: |
           source share/spack/setup-env.sh
@@ -125,7 +125,7 @@ jobs:
       - name: Install dependencies
         run: |
           brew install tree
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
       - uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
@@ -143,7 +143,7 @@ jobs:
       matrix:
         python-version: ['2.7', '3.5', '3.6', '3.7', '3.8', '3.9']
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
       - uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/build-containers.yml b/.github/workflows/build-containers.yml
index d2dd2d825ee9f3..f9964f20b1e068 100644
--- a/.github/workflows/build-containers.yml
+++ b/.github/workflows/build-containers.yml
@@ -25,7 +25,7 @@ jobs:
     name: Build ${{ matrix.dockerfile[0] }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.1.0
 
       - name: Set Container Tag Normal (Nightly)
         run: |
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 b45249f371312e..f041ad7a371947 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