diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3e23bd6..b190a85 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
   test:
     strategy:
       matrix:
-        os: [ubuntu-18.04, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2