diff --git a/.github/workflows/trigger-python.yml b/.github/workflows/trigger-python.yml
index 8fad9e7ca..94527e732 100644
--- a/.github/workflows/trigger-python.yml
+++ b/.github/workflows/trigger-python.yml
@@ -1,6 +1,9 @@
 # This triggers Cython builds on `gtsam-manylinux-build`
 name: Trigger Python Builds
-on: push
+on:
+  push:
+    branches:
+      - develop
 jobs:
   triggerCython:
     runs-on: ubuntu-latest