diff --git a/core.md b/core.md
index 3093f4ae52..2ec8aa89cf 100644
--- a/core.md
+++ b/core.md
@@ -36,4 +36,4 @@
 - 除非必要，合并 PR 时不要 squash-merge
 
 wxy@LCTT 
-2017/12/24
+2016/12/24