diff --git a/ROS2.gitignore b/ROS2.gitignore
index 560a4ff..6cc824d 100644
--- a/ROS2.gitignore
+++ b/ROS2.gitignore
@@ -24,5 +24,6 @@ qtcreator-*
 # Emacs
 .#*
 
-# Ament custom files
+# Colcon custom files
+COLCON_IGNORE
 AMENT_IGNORE