diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7516292..94b8820 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
       DOTNET_CLI_TELEMETRY_OPTOUT: 1
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
@@ -70,7 +70,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Markdown lint
         uses: avto-dev/markdown-lint@v1
         with:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index d266340..f50ede2 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -22,7 +22,7 @@ jobs:
         language: [ 'csharp' ]
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3