diff --git a/.github/actions/lint/run.sh b/.github/actions/lint/run.sh
index 3441cf7..94e8f0c 100755
--- a/.github/actions/lint/run.sh
+++ b/.github/actions/lint/run.sh
@@ -2,6 +2,7 @@
 set -e
 
 sudo apt-get update
+source /opt/ros/$ROS_DISTRO/setup.bash
 if [[ "ament_flake8" == "ament_${LINTER}" ]]; then
     ament_${LINTER} . --config python_linter.flake8
 else