diff --git a/.github/workflows/FMITest.yml b/.github/workflows/FMITest.yml
index fb393714..640d6543 100644
--- a/.github/workflows/FMITest.yml
+++ b/.github/workflows/FMITest.yml
@@ -16,7 +16,7 @@ jobs:
         omc-version: ['stable', 'nightly']
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: "Set up OpenModelica Compiler"
         uses: OpenModelica/setup-openmodelica@v1.0.5
         with:
@@ -28,7 +28,7 @@ jobs:
 
       - run: "omc --version"
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/Test.yml b/.github/workflows/Test.yml
index 38fcdf51..3601cb84 100644
--- a/.github/workflows/Test.yml
+++ b/.github/workflows/Test.yml
@@ -19,7 +19,7 @@ jobs:
         omc-version: ['stable', 'nightly']
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
@@ -80,7 +80,7 @@ jobs:
         os: ['ubuntu-latest']
     if: startsWith(github.ref, 'refs/tags/')
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6