diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index e48e6ec..25d0016 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-22.04]
         python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
 
     steps: