diff --git a/.github/workflows/build-wheels.yml b/.github/workflows/build-wheels.yml
index 728d28ee..c5188bc9 100644
--- a/.github/workflows/build-wheels.yml
+++ b/.github/workflows/build-wheels.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest]
+        os: [ubuntu-20.04, windows-latest]
     defaults:
       run:
         shell: pwsh