diff --git a/README.md b/README.md
index f6a91fd..28d82e0 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # [HPatchLite](https://github.com/sisong/HPatchLite)
-[![release](https://img.shields.io/badge/release-v0.4.1-blue.svg)](https://github.com/sisong/HPatchLite/releases) 
+[![release](https://img.shields.io/badge/release-v0.4.2-blue.svg)](https://github.com/sisong/HPatchLite/releases) 
 [![license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/sisong/HPatchLite/blob/main/LICENSE) 
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-blue.svg)](https://github.com/sisong/HPatchLite/pulls)
 [![+issue Welcome](https://img.shields.io/github/issues-raw/sisong/HPatchLite?color=green&label=%2Bissue%20welcome)](https://github.com/sisong/HPatchLite/issues)   
@@ -10,9 +10,9 @@
 
 HPatchLite is a lite version of [HDiffPatch](https://github.com/sisong/HDiffPatch), tiny code & ram requirements when patch on MCU,NB-IoT,...   
 
-The patch code(ROM occupancy) very small, compiled by Mbed Studio is 664 bytes. 
-Tip: if define _IS_RUN_MEM_SAFE_CHECK=0 can reduce 74 bytes; 
-if used tinyuz & define _IS_USED_SHARE_hpatch_lite_types=1, can reduce 52 bytes.   
+The patch code(ROM occupancy) very small, compiled by Mbed Studio is 670 bytes. 
+Tip: if used tinyuz & define _IS_USED_SHARE_hpatch_lite_types=1, can reduce 52 bytes; 
+if define _IS_RUN_MEM_SAFE_CHECK=0, can reduce 74 bytes.   
 
 At the same time, the patch memory(RAM occupancy) can also be very small, 
 RAM size = one decompress memory size + input cache size(>=3Byte) when patch. 
diff --git a/README_cn.md b/README_cn.md
index 04b30fd..351c3d9 100644
--- a/README_cn.md
+++ b/README_cn.md
@@ -1,5 +1,5 @@
 # [HPatchLite](https://github.com/sisong/HPatchLite)
-[![release](https://img.shields.io/badge/release-v0.4.1-blue.svg)](https://github.com/sisong/HPatchLite/releases) 
+[![release](https://img.shields.io/badge/release-v0.4.2-blue.svg)](https://github.com/sisong/HPatchLite/releases) 
 [![license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/sisong/HPatchLite/blob/main/LICENSE) 
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-blue.svg)](https://github.com/sisong/HPatchLite/pulls)
 [![+issue Welcome](https://img.shields.io/github/issues-raw/sisong/HPatchLite?color=green&label=%2Bissue%20welcome)](https://github.com/sisong/HPatchLite/issues)   
@@ -10,9 +10,9 @@
 
 HPatchLite 是 [HDiffPatch](https://github.com/sisong/HDiffPatch) 的一个精简(Lite)版，为在MCU、NB-IoT等小型设备上执行打补丁(patch)功能而优化。   
 
-编译后的patch代码(ROM 占用)非常的小，用 Mbed Studio 编译后为 664 字节。 
-提示：设置宏_IS_RUN_MEM_SAFE_CHECK=0可以节省74字节； 
-如果使用了tinyuz并且设置宏_IS_USED_SHARE_hpatch_lite_types=1，可以节省52字节。   
+编译后的patch代码(ROM 占用)非常的小，用 Mbed Studio 编译后为 670 字节。 
+提示：如果使用了tinyuz并且设置宏_IS_USED_SHARE_hpatch_lite_types=1，可以节省52字节； 
+设置宏_IS_RUN_MEM_SAFE_CHECK=0，可以节省74字节。   
 
 同时，patch时内存(RAM 占用)也可以非常的小， 
 大小为 一个解压缩流需要的内存大小 + patch时输入的缓存区大小(>=3Byte)。
diff --git a/hdiffi_import_patch.h b/hdiffi_import_patch.h
index 0e81e77..8d100b6 100644
--- a/hdiffi_import_patch.h
+++ b/hdiffi_import_patch.h
@@ -13,7 +13,7 @@ extern "C" {
 #endif
 #define HPATCHLITE_VERSION_MAJOR    0
 #define HPATCHLITE_VERSION_MINOR    4
-#define HPATCHLITE_VERSION_RELEASE  1
+#define HPATCHLITE_VERSION_RELEASE  2
 
 #define _HPATCHLITE_VERSION          HPATCHLITE_VERSION_MAJOR.HPATCHLITE_VERSION_MINOR.HPATCHLITE_VERSION_RELEASE
 #define _HDIFFPATCH_QUOTE(str) #str