diff --git a/HISTORY b/HISTORY
index 89a3e44..fba8041 100755
--- a/HISTORY
+++ b/HISTORY
@@ -1,6 +1,7 @@
 Oct. 27 2015
 Added an mb_set_import_handler function
 Added an mb_init_coll function
+Fixed a collection referencing by iterator bug during GC
 Fixed an argument detection issue with nil value
 Improved stability