diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 2d31cc09..274030c0 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -36,7 +36,7 @@ jobs:
 
       - name: Run benchmark
         run: |
-          python bench/bench.py --callgrind | tee output.txt
+          python bench/bench.py --callgrind --vm "./luau -O2" | tee output.txt
 
       - name: Checkout Benchmark Results repository
         uses: actions/checkout@v3