diff --git a/pico_hsm_sdk_import.cmake b/pico_hsm_sdk_import.cmake
index ec6d343..48c51c2 100644
--- a/pico_hsm_sdk_import.cmake
+++ b/pico_hsm_sdk_import.cmake
@@ -54,6 +54,7 @@ if (NOT TARGET pico_hsm_sdk)
             ${CMAKE_CURRENT_LIST_DIR}/src/apdu.c
 
             ${CMAKE_CURRENT_LIST_DIR}/mbedtls/library/aes.c
+            ${CMAKE_CURRENT_LIST_DIR}/mbedtls/library/asn1parse.c
             ${CMAKE_CURRENT_LIST_DIR}/mbedtls/library/asn1write.c
             ${CMAKE_CURRENT_LIST_DIR}/mbedtls/library/bignum.c
             ${CMAKE_CURRENT_LIST_DIR}/mbedtls/library/cmac.c