diff --git a/doc/F-Stack_Release_Note.md b/doc/F-Stack_Release_Note.md
index 9f28dfc7..5376d048 100644
--- a/doc/F-Stack_Release_Note.md
+++ b/doc/F-Stack_Release_Note.md
@@ -2,6 +2,13 @@
 
 F-Stack is an open source network framework based on DPDK.
 
+2018.5 F-Stack v1.12
+
+  1. Fixed some bugs.
+  2. Nginx: host event supported. 
+  3. kern_timeout: decrease the cpu usage of timer.
+  4. DPDK: upgrade to 17.11.2 LTS.
+
 2017.11 F-Stack v1.11
 
   1. Intel DPDK network I/O module.