diff --git a/.github/workflows/mutation_testing.yml b/.github/workflows/mutation_testing.yml
index 4f57599..d4f2f60 100644
--- a/.github/workflows/mutation_testing.yml
+++ b/.github/workflows/mutation_testing.yml
@@ -36,7 +36,7 @@ jobs:
       run: ./vendor/bin/infection --threads=2
 
     - name: Archive mutation results
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v6
       with:
         name: Mutation log
         path: infection.log
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