diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index e9afc61c..7047da27 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -6,6 +6,8 @@ on:
 jobs:
   Benchmark:
     if: "!contains(github.event.head_commit.message, '[skip ci]')"
+    env:
+      GKS_ENCODING: "utf8"
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2