diff --git a/.github/workflows/makecode.yml b/.github/workflows/makecode.yml
index 7ba4d90c..2dae4f93 100644
--- a/.github/workflows/makecode.yml
+++ b/.github/workflows/makecode.yml
@@ -14,7 +14,7 @@ jobs:
         pxt-flags: ["PXT_NODOCKER=1", ""]
       fail-fast: false
     name: Build MakeCode ${{ matrix.pxt-flags && '(nodocker)' }}
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
     steps:
       - name: Setup Python 3.9
         uses: actions/setup-python@v5