diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5828cff..d0d2669 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
   windows:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Run regulation regression tests
@@ -21,7 +21,7 @@ jobs:
   ubuntu:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Run regulation regression tests
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 91d3031..1b150f4 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -21,7 +21,7 @@ jobs:
       actions: read
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3