diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e890cb76..93266f01 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-18.04, macos-latest]
+        os: [ubuntu-18.04, ubuntu-latest, macos-latest]
         python-version: [2.7, 3.8]
         include:
           - os: ubuntu-18.04