diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 8045f7e..3c0684d 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.
diff --git a/.github/workflows/csharp.yml b/.github/workflows/csharp.yml
index e23602d..43a0855 100644
--- a/.github/workflows/csharp.yml
+++ b/.github/workflows/csharp.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Test dotnet
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up dotnet 8.
         uses: actions/setup-dotnet@v5
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 379a5d4..b3369a5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Deploy
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up dotnet.
         uses: actions/setup-dotnet@v5
         with: