diff --git a/.github/workflows/validate_python.yml b/.github/workflows/validate_python.yml
index 0b405d6..6267255 100644
--- a/.github/workflows/validate_python.yml
+++ b/.github/workflows/validate_python.yml
@@ -4,9 +4,15 @@ name: Validate Python (flake8)
 # yamllint disable-line rule:truthy
 on:
   push:
+    branches:
+      - dev
+      - beta
     paths:
       - '*.py'
   pull_request:
+    branches:
+      - dev
+      - beta
     paths:
       - '*.py'
   workflow_dispatch: