diff --git a/diagnostic_common_diagnostics/package.xml b/diagnostic_common_diagnostics/package.xml
index a698c4cb..c6620036 100644
--- a/diagnostic_common_diagnostics/package.xml
+++ b/diagnostic_common_diagnostics/package.xml
@@ -22,6 +22,7 @@
   <exec_depend>lm-sensors</exec_depend>
   <exec_depend>python3-ntplib</exec_depend>
   <exec_depend>python3-psutil</exec_depend>
+  <exec_depend>rclpy</exec_depend>
 
   <test_depend>ament_lint_auto</test_depend>
   <!-- Usage of ament_lint_common is locked by https://github.com/ament/ament_lint/issues/423