diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 803de47..03df8db 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, ubuntu-latest, windows-latest]
+        os: [macos-latest, windows-latest, ubuntu-20.04]
         node: ['14', '12']
 
     steps:
@@ -29,7 +29,7 @@ jobs:
       - run: npm run build
 
   coverage:
-    runs-on: ubuntu-latest
+    runs-on: macos-latest
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2