diff --git a/.github/workflows/cpp.yml b/.github/workflows/cpp.yml
index dfd30a1a5..59713c0a8 100644
--- a/.github/workflows/cpp.yml
+++ b/.github/workflows/cpp.yml
@@ -20,11 +20,13 @@ on:
     branches:
     - master
     - 'envoy-release/**'
+    - 'istio-release/**'
 
   push:
     branches:
     - master
     - 'envoy-release/**'
+    - 'istio-release/**'
 
 jobs: