diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0a16563..7991cf5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-22.04
             python-version: "3.7"
           - os: ubuntu-latest
             python-version: "3.8"