diff --git a/.github/workflows/interop.yml b/.github/workflows/interop.yml
index 2beb0d287b..6a6013b6cf 100644
--- a/.github/workflows/interop.yml
+++ b/.github/workflows/interop.yml
@@ -1,4 +1,10 @@
-on: [push, pull_request]
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
 name: Interop Tests
 
 jobs:
diff --git a/.github/workflows/upstream.yml b/.github/workflows/upstream.yml
index 08e0a7822e..66fa4330ee 100644
--- a/.github/workflows/upstream.yml
+++ b/.github/workflows/upstream.yml
@@ -1,4 +1,10 @@
-on: [push, pull_request]
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
 name: Upstream Test
 
 jobs: