diff --git a/.github/workflows/validate-branch.yaml b/.github/workflows/validate-branch.yaml
index 1bcbb13..6a9d21b 100644
--- a/.github/workflows/validate-branch.yaml
+++ b/.github/workflows/validate-branch.yaml
@@ -1,12 +1,12 @@
 name: Validate
-on: [push]
+on: [ push ]
 
 jobs:
   lint:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ '3.11' ]
+        python-version: [ '3.8' ] # use minimum supported version
         os: [ ubuntu-latest ]
     runs-on: ${{ matrix.os }}
     timeout-minutes: 5