diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
index f926bbd00..ede5d9e74 100644
--- a/.github/workflows/bench.yml
+++ b/.github/workflows/bench.yml
@@ -60,6 +60,7 @@ jobs:
       id-token: 'write'
     strategy:
       fail-fast: false
+      max-parallel: 1
       matrix:
         opt:
           - name: opt