diff --git a/.github/workflows/compile-halide-cpp.yml b/.github/workflows/compile-halide-cpp.yml
index 6bec8a5..9588135 100644
--- a/.github/workflows/compile-halide-cpp.yml
+++ b/.github/workflows/compile-halide-cpp.yml
@@ -8,6 +8,8 @@ on:
     branches: [ master ]
   pull_request:
     types: [edited, submitted]
+    paths:
+      - proximal/halide/**
 
 jobs:
   build: