diff --git a/.github/workflows/check-formatting.yml b/.github/workflows/check-formatting.yml
index 6228ea79..a4732422 100644
--- a/.github/workflows/check-formatting.yml
+++ b/.github/workflows/check-formatting.yml
@@ -20,7 +20,7 @@ jobs:
         python-version: ["3.10", "3.12", "3.13"]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6
       with:
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index da6dde29..ccf84e23 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -38,7 +38,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/docs-publish.yml b/.github/workflows/docs-publish.yml
index 5f0f603d..9636d695 100644
--- a/.github/workflows/docs-publish.yml
+++ b/.github/workflows/docs-publish.yml
@@ -43,7 +43,7 @@ jobs:
         python-version: ["3.12"]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Clear unnecessary system components
       run: |
         echo "Free space:"
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index bb795abd..e5fad856 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
@@ -84,7 +84,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Build Changelog
         id: changelog
         uses: mikepenz/release-changelog-builder-action@v6
diff --git a/.github/workflows/run-pytest.yml b/.github/workflows/run-pytest.yml
index 6502b363..7d6af0fe 100644
--- a/.github/workflows/run-pytest.yml
+++ b/.github/workflows/run-pytest.yml
@@ -28,7 +28,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Clear unnecessary system components
       run: |
         echo "Free space:"
diff --git a/.github/workflows/test-databases.yml b/.github/workflows/test-databases.yml
index 803a85e7..9d7798cf 100644
--- a/.github/workflows/test-databases.yml
+++ b/.github/workflows/test-databases.yml
@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Clear unnecessary system components
       run: |
         echo "Free space:"
diff --git a/.github/workflows/test-models.yml b/.github/workflows/test-models.yml
index 3f82cfea..8a6787d1 100644
--- a/.github/workflows/test-models.yml
+++ b/.github/workflows/test-models.yml
@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Clear unnecessary system components
       run: |
         echo "Free space:"
diff --git a/.github/workflows/test-ppl.yml b/.github/workflows/test-ppl.yml
index 1b6f6777..99f06561 100644
--- a/.github/workflows/test-ppl.yml
+++ b/.github/workflows/test-ppl.yml
@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Clear unnecessary system components
       run: |
         echo "Free space:"