diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 485f96a..9f34a20 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: [3.7, 3.8, 3.9, "3.10", 3.11, 3.12]
-        os: [ubuntu-18.04, ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2