diff --git a/.github/workflows/check_format.yml b/.github/workflows/check_format.yml
index 499e081..81c1106 100644
--- a/.github/workflows/check_format.yml
+++ b/.github/workflows/check_format.yml
@@ -14,7 +14,7 @@ jobs:
         python-version: ["3.11"]
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Black Code Formatter
         uses: lgeiger/black-action@v1.0.1
         with:
diff --git a/.github/workflows/packaging_test.yml b/.github/workflows/packaging_test.yml
index c7f04ac..14117c5 100644
--- a/.github/workflows/packaging_test.yml
+++ b/.github/workflows/packaging_test.yml
@@ -14,7 +14,7 @@ jobs:
         python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index bd39099..684582e 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -9,7 +9,7 @@ jobs:
         python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with: