diff --git a/.github/workflows/mutation-testing.yml b/.github/workflows/mutation-testing.yml
index 522b711cc5..659b19db36 100644
--- a/.github/workflows/mutation-testing.yml
+++ b/.github/workflows/mutation-testing.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Check out repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up .NET
         uses: actions/setup-dotnet@v4