diff --git a/ucb/Library_ucpext.mk b/ucb/Library_ucpext.mk
index 3e6c5f599a56..889c7351c099 100644
--- a/ucb/Library_ucpext.mk
+++ b/ucb/Library_ucpext.mk
@@ -27,6 +27,10 @@
 
 $(eval $(call gb_Library_Library,ucpext))
 
+$(eval $(call gb_Library_use_packages,ucpext,\
+	tools_inc \
+))
+
 $(eval $(call gb_Library_set_componentfile,ucpext,ucb/source/ucp/ext/ucpext))
 
 $(eval $(call gb_Library_use_sdk_api,ucpext))