diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4bb60a9..590201d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,10 +18,9 @@ endif()
 # find dependencies
 find_package(ament_cmake REQUIRED)
 find_package(ignition-cmake2 REQUIRED)
-find_package(ignition-msgs8 REQUIRED)
-find_package(ignition-transport11 REQUIRED)
-find_package(ignition-math6 REQUIRED)
-find_package(ignition-common4 REQUIRED)
+find_package(ignition-msgs5 REQUIRED)
+find_package(ignition-transport8 REQUIRED)
+find_package(ignition-common3 REQUIRED)
 find_package(ignition-gazebo6 REQUIRED)
 
 # uncomment the following section in order to fill in
@@ -41,7 +40,7 @@ endif()
 
 add_executable(ExtractPos src/extract_cone_pos_bbox.cpp)
 
-target_link_libraries(ExtractPos ${IGNITION-MSGS_LIBRARIES} ${IGNITION-TRANSPORT_LIBRARIES} ${IGNITION-COMMON_LIBRARIES} ${IGNITION-MATH_LIBRARIES})
+target_link_libraries(ExtractPos ${IGNITION-MSGS_LIBRARIES} ${IGNITION-TRANSPORT_LIBRARIES})
 
 install(TARGETS ExtractPos DESTINATION lib/${PROJECT_NAME})