diff --git a/README.TXT b/README.TXT
index 0fa0e69..2252759 100644
--- a/README.TXT
+++ b/README.TXT
@@ -4,4 +4,6 @@ Support the following products: BLEShield and BLEMini.
 
 We are going to add more interesting resource for makers to do their innovative projects.
 
+* Note that for up to date source code, please refer to each reposotory of RedBearLab.
+
 Cheers!