diff --git a/obelisk_ws/src/cpp/obelisk_control_cpp/CMakeLists.txt b/obelisk_ws/src/cpp/obelisk_control_cpp/CMakeLists.txt
index 30000bc4..54b8c34c 100644
--- a/obelisk_ws/src/cpp/obelisk_control_cpp/CMakeLists.txt
+++ b/obelisk_ws/src/cpp/obelisk_control_cpp/CMakeLists.txt
@@ -7,6 +7,7 @@ endif()
 
 # find dependencies
 find_package(ament_cmake REQUIRED)
+find_package(fastcdr REQUIRED)  # Required for ament transitive dependencies
 
 # Get the Obelisk library
 include(FetchContent)
diff --git a/obelisk_ws/src/cpp/obelisk_estimation_cpp/CMakeLists.txt b/obelisk_ws/src/cpp/obelisk_estimation_cpp/CMakeLists.txt
index 0dd04b0c..08a3e340 100644
--- a/obelisk_ws/src/cpp/obelisk_estimation_cpp/CMakeLists.txt
+++ b/obelisk_ws/src/cpp/obelisk_estimation_cpp/CMakeLists.txt
@@ -7,6 +7,7 @@ endif()
 
 # find dependencies
 find_package(ament_cmake REQUIRED)
+find_package(fastcdr REQUIRED)  # Required for ament transitive dependencies
 
 # Get the Obelisk library
 include(FetchContent)