diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a39ece1..d4f873c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -57,7 +57,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest]
+        os: [ubuntu-22.04, windows-latest]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5