diff --git a/.github/workflows/services-json.yml b/.github/workflows/services-json.yml
index c010ba741..6778fa355 100644
--- a/.github/workflows/services-json.yml
+++ b/.github/workflows/services-json.yml
@@ -16,7 +16,7 @@ on:
 jobs:
   schema:
     name: Schema
-    runs-on: [ubuntu-latest]
+    runs-on: [ubuntu-20.04]
     steps:
       - name: Checkout
         uses: actions/checkout@v3