diff --git a/example02_threaded_raytracing/.gitignore b/example02_threaded_raytracing/.gitignore
index eb32573..1a1bdad 100644
--- a/example02_threaded_raytracing/.gitignore
+++ b/example02_threaded_raytracing/.gitignore
@@ -1,3 +1,4 @@
 build*/
 compile_commands.json
 .cache/
+src/*.o