diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a9f3e76..a6d4787 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
           - "3.11"
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3.3.0
+      - uses: actions/checkout@v4.2.0
         with:
           fetch-depth: 0
       - name: Setup Python ${{ matrix.python }}
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index f62cef5..5ac402e 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3.3.0
+        uses: actions/checkout@v4.2.0
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2.2.1
diff --git a/.github/workflows/mutation-testing.yml b/.github/workflows/mutation-testing.yml
index 6ba29e9..6076416 100644
--- a/.github/workflows/mutation-testing.yml
+++ b/.github/workflows/mutation-testing.yml
@@ -6,7 +6,7 @@ jobs:
   mutation-tests:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3.3.0
+      - uses: actions/checkout@v4.2.0
       - name: Setup Python
         uses: actions/setup-python@v4.5.0
         with: