diff --git a/library/Makefile b/library/Makefile
index b76a84b..bd5274d 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -162,6 +162,7 @@
 	  ssl_srv.o \
 	  ssl_ticket.o \
 	  ssl_tls.o \
+	  ssl_tls13_keys.o \
 	  # This line is intentionally left blank
 
 .SILENT: