diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d652d095..d1d36bf0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,8 @@ jobs:
   # This workflow contains a single job called "build"
   build:
     # The type of runner that the job will run on
-    runs-on: ubuntu-latest
+    # ubuntu-latest fails: https://github.com/actions/runner/issues/2364
+    runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
       matrix: