diff --git a/core.md b/core.md
index da45c009fc..3093f4ae52 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 
-2016/12/24
\ No newline at end of file
+2017/12/24