diff --git a/README.md b/README.md
index 4b716f8..89c1cb3 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # EasyFlash 
 
-[![GitHub release](https://img.shields.io/github/release/armink/EasyFlash.svg)](https://github.com/armink/EasyFlash/releases/latest) [![GitHub commits](https://img.shields.io/github/commits-since/armink/EasyFlash/3.3.0.svg)](https://github.com/armink/EasyFlash/compare/3.3.0...master) [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/armink/EasyFlash/master/LICENSE)
+[![GitHub release](https://img.shields.io/github/release/armink/EasyFlash.svg)](https://github.com/armink/EasyFlash/releases/latest) [![GitHub commits](https://img.shields.io/github/commits-since/armink/EasyFlash/4.0.0.svg)](https://github.com/armink/EasyFlash/compare/4.0.0...master) [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/armink/EasyFlash/master/LICENSE)
 
 ## 1、介绍（[English](#1-introduction)）
 
diff --git a/easyflash/inc/easyflash.h b/easyflash/inc/easyflash.h
index 9819a06..5d109ea 100644
--- a/easyflash/inc/easyflash.h
+++ b/easyflash/inc/easyflash.h
@@ -65,8 +65,8 @@ if (!(EXPR))                                                                  \
 #endif
 
 /* EasyFlash software version number */
-#define EF_SW_VERSION                  "4.0.0"
-#define EF_SW_VERSION_NUM              0x40000
+#define EF_SW_VERSION                  "4.0.99"
+#define EF_SW_VERSION_NUM              0x40099
 
 typedef struct _ef_env {
     char *key;