diff --git a/.github/workflows/mutation-tests.yml b/.github/workflows/mutation-tests.yml
index 7c9e1f069fd..5a28ac6b1bb 100644
--- a/.github/workflows/mutation-tests.yml
+++ b/.github/workflows/mutation-tests.yml
@@ -22,7 +22,7 @@ permissions:
 jobs:
   mutations:
     name: 'mutations-${{ matrix.name }}'
-    runs-on: windows-latest
+    runs-on: ubuntu-latest
     timeout-minutes: 60
 
     strategy:
diff --git a/eng/stryker-config.json b/eng/stryker-config.json
index 053f7904ae7..6f1bf4d27a6 100644
--- a/eng/stryker-config.json
+++ b/eng/stryker-config.json
@@ -19,6 +19,7 @@
       "block",
       "statement"
     ],
+    "concurrency": 4,
     "configuration": "Debug",
     "target-framework": "net8.0",
     "thresholds": {