diff --git a/.github/workflows/pythonapp.yml b/.github/workflows/pythonapp.yml
index 232f1e0d6..da3cc616d 100644
--- a/.github/workflows/pythonapp.yml
+++ b/.github/workflows/pythonapp.yml
@@ -58,7 +58,7 @@ jobs:
           python orm migrate --connection mysql
           make test
   lint:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     name: Lint
     steps:
       - uses: actions/checkout@v1