diff --git a/lely_core_libraries/package.xml b/lely_core_libraries/package.xml
index 4ae972a2..1e06a511 100644
--- a/lely_core_libraries/package.xml
+++ b/lely_core_libraries/package.xml
@@ -15,6 +15,7 @@
   <build_depend>automake</build_depend>
   <build_depend>libtool</build_depend>
   <depend>python3-empy</depend>
+  <depend>python3-yaml</depend>
 
   <export>
     <build_type>ament_cmake</build_type>