diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f779781..60c39dd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,8 +7,8 @@ on:
       - 'arduino_pong.ino'
       - 'Makefile'
       - '.github/workflows/ci.yml'
-      - '*.cpp'
-      - '*.h'
+      - 'src/*.cpp'
+      - 'src/*.h'
 
 jobs:
   build: