diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 734394737..62d3aa5ae 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -56,7 +56,7 @@ jobs:
       run: cmake --version
 
     - name: Checkout cbdr
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         repository: MFraters/cbdr
         ref: github_actions_fix
@@ -93,7 +93,7 @@ jobs:
         key: ${{ runner.os }}-gwb-feature-${{ github.event.number }}-v3}}
 
     - name: Checkout cbdr
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         repository: MFraters/cbdr
         ref: github_actions_fix
@@ -102,13 +102,13 @@ jobs:
 
 
     - name: Checkout feature
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         path: feature/source
         clean: false
 
     - name: Checkout main
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         ref: main
         path: main/source
diff --git a/.github/workflows/draft-pdf.yml b/.github/workflows/draft-pdf.yml
index 4f9477693..94137c2f5 100644
--- a/.github/workflows/draft-pdf.yml
+++ b/.github/workflows/draft-pdf.yml
@@ -6,7 +6,7 @@ jobs:
     name: Paper Draft
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Build draft PDF
         uses: openjournals/openjournals-draft-action@master
         with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b3eb26c1b..3068819eb 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Use cmake
         run: cmake --version
       
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Install astyle
         shell: bash
@@ -71,7 +71,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name:  Install optional dependencies
       run:   |
@@ -140,7 +140,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       
     - name: Create Build Environment
       run: cmake -E make_directory ${{github.workspace}}/build
@@ -178,7 +178,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     # python in combination with cmake seems to be broken on github actions windows
     # todo: fix it
@@ -224,7 +224,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name:  Install optional dependencies
       run:   |
@@ -276,7 +276,7 @@ jobs:
   coverage:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name:  Install optional dependencies
         run: sudo apt install gfortran swig python3-setuptools openmpi-bin libopenmpi-dev
@@ -348,7 +348,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name:  Install optional dependencies
       run:   |
@@ -408,7 +408,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name:  Install optional dependencies
       run:   |
@@ -467,7 +467,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name:  Install optional dependencies
       run:   |
@@ -528,7 +528,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name:  Install optional dependencies
       run:   |
@@ -589,7 +589,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name:  Install optional dependencies
       run:   |
@@ -647,7 +647,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name:  Install optional dependencies
       run:   |