diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 3b7e777c315..83af18d2433 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -19,7 +19,7 @@ jobs:
   lint:
     name: lint
     if: ${{ contains(github.event.pull_request.labels.*.name, 'ready-for-testing') && github.event.pull_request.merged != true }}
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
         with: