diff --git a/conf/distro/ros2.conf b/conf/distro/ros2.conf
index 91f6dca..c27b6cc 100644
--- a/conf/distro/ros2.conf
+++ b/conf/distro/ros2.conf
@@ -3,3 +3,5 @@
 DISTRO_NAME = "Robot Operating System 2 (ROS 2)"
 
 require conf/distro/include/ros-common.inc
+
+PNBLACKLIST[python] ?= "ROS 2 is Python 3 only"