get CI passing again

certifi · Dec 7, 2022 · fed4048 · fed4048
1 parent 9e9e840
commit fed4048
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   mypy:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
       - uses: actions/checkout@v3