diff --git a/00-first-demo.md b/00-first-demo.md
index 4dda9ba73ca8b2e52c857f096f89f9a79badc17c..d2d3a35778520b583383f12a68f69716cc1adca2 100644
--- a/00-first-demo.md
+++ b/00-first-demo.md
@@ -6,7 +6,7 @@ TARGET:=demo
 
 CXXFLAGS:=-I$(HOME)/.tbox/include
 LDFLAGS:=-L$(HOME)/.tbox/lib -rdynamic
-LIBS:=-ltbox_main -ltbox_trace -ltbox_terminal -ltbox_network -ltbox_eventx -ltbox_event -ltbox_log -ltbox_util -ltbox_base -lpthread -ldl
+LIBS:=-ltbox_main -ltbox_trace -ltbox_terminal -ltbox_network -ltbox_eventx -ltbox_event -ltbox_log -ltbox_util -ltbox_base -ltbox_coroutine -lpthread -ldl
 
 $(TARGET):
 	g++ -o $(TARGET) $(LDFLAGS) $(LIBS)