diff --git a/lerna.json b/lerna.json
index bae32a4..fa72057 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.5.20",
+  "version": "0.5.21-alpha.0",
   "npmClient": "yarn",
   "command": {
     "publish": {
diff --git a/packages/boring-router-react/package.json b/packages/boring-router-react/package.json
index 5222995..11de0b0 100644
--- a/packages/boring-router-react/package.json
+++ b/packages/boring-router-react/package.json
@@ -1,6 +1,6 @@
 {
   "name": "boring-router-react",
-  "version": "0.5.20",
+  "version": "0.5.21-alpha.0",
   "description": "A type-safe MobX router with parallel routing support.",
   "license": "MIT",
   "author": "Chengdu Mufan Technology Co., Ltd.",
diff --git a/packages/boring-router/package.json b/packages/boring-router/package.json
index 07f2a9a..52854bd 100644
--- a/packages/boring-router/package.json
+++ b/packages/boring-router/package.json
@@ -1,6 +1,6 @@
 {
   "name": "boring-router",
-  "version": "0.5.20",
+  "version": "0.5.21-alpha.0",
   "description": "A type-safe MobX router with parallel routing support.",
   "license": "MIT",
   "author": "Chengdu Mufan Technology Co., Ltd.",