diff --git a/.github/workflows/python-ci.yml b/.github/workflows/python-ci.yml
index 64fe330..4f3f617 100644
--- a/.github/workflows/python-ci.yml
+++ b/.github/workflows/python-ci.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python 3.12
         uses: actions/setup-python@v5
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 60a85d7..8123213 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
@@ -38,7 +38,7 @@ jobs:
     name: Python Dependency Audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/swift-ci.yml b/.github/workflows/swift-ci.yml
index 4d25889..5f5870e 100644
--- a/.github/workflows/swift-ci.yml
+++ b/.github/workflows/swift-ci.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: macos-15
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Select Xcode
         run: sudo xcode-select -s /Applications/Xcode_16.app