diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3600dea1..8559148d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,6 +1,10 @@
 name: Build
 
-on: push
+on:
+  push:
+    branches-ignore:
+      - 'l10n_master'
+      - 'gh-pages'
 
 jobs:
   build: