diff --git a/README.md b/README.md
index b8abb51..4d000f7 100644
--- a/README.md
+++ b/README.md
@@ -25,4 +25,10 @@ Program setup,
 - Testing with `node app/check.js`
 - Register contract address & signer address & MMSK server url to Tokenlon team
 
+## Version Release
+
+1. bump version in `package.json`, please follow [semantic versioning](https://semver.org/).
+2. run release script under `script` folder
+3. upload tar file on github release page with writing change log
+
 copyright© imToken PTE. LTD.
diff --git a/package.json b/package.json
index 626a610..7500f4b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@consenlabs/tokenlon-mmsk",
-  "version": "5.1.0",
+  "version": "5.1.1",
   "description": "Tokenlon market maker server kit",
   "author": "imToken PTE. LTD.",
   "license": "MIT",