diff --git a/pico_hsm_sdk_import.cmake b/pico_hsm_sdk_import.cmake
index deafe9b..f06d1ba 100644
--- a/pico_hsm_sdk_import.cmake
+++ b/pico_hsm_sdk_import.cmake
@@ -96,9 +96,11 @@ if (NOT TARGET pico_hsm_sdk)
         target_sources(pico_hsm_sdk INTERFACE
                 ${CMAKE_CURRENT_LIST_DIR}/src/usb/hid/hid.c
                 ${CMAKE_CURRENT_LIST_DIR}/src/usb/hid/usb_descriptors.c
+                ${CMAKE_CURRENT_LIST_DIR}/tinycbor/src/cborencoder.c
                 )
         target_include_directories(pico_hsm_sdk INTERFACE
                 ${CMAKE_CURRENT_LIST_DIR}/src/usb/hid
+                ${CMAKE_CURRENT_LIST_DIR}/tinycbor/src
                 )
     endif()