diff --git a/lerna.json b/lerna.json
index d9e55f0..89b644c 100644
--- a/lerna.json
+++ b/lerna.json
@@ -6,5 +6,5 @@
     "packages/core",
     "packages/idraw"
   ],
-  "version": "0.2.0-alpha.6"
+  "version": "0.2.0-alpha.7"
 }
diff --git a/packages/board/package.json b/packages/board/package.json
index 969cc5b..a199bd8 100644
--- a/packages/board/package.json
+++ b/packages/board/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idraw/board",
-  "version": "0.2.0-alpha.6",
+  "version": "0.2.0-alpha.7",
   "description": "",
   "main": "dist/index.cjs.js",
   "module": "dist/index.es.js",
@@ -23,10 +23,10 @@
   "author": "chenshenhai",
   "license": "MIT",
   "devDependencies": {
-    "@idraw/types": "^0.2.0-alpha.6"
+    "@idraw/types": "^0.2.0-alpha.7"
   },
   "dependencies": {
-    "@idraw/util": "^0.2.0-alpha.6"
+    "@idraw/util": "^0.2.0-alpha.7"
   },
   "publishConfig": {
     "access": "public"
diff --git a/packages/core/package.json b/packages/core/package.json
index f60daf2..bdbfeee 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idraw/core",
-  "version": "0.2.0-alpha.6",
+  "version": "0.2.0-alpha.7",
   "description": "",
   "main": "dist/index.cjs.js",
   "module": "dist/index.es.js",
@@ -23,11 +23,11 @@
   "author": "chenshenhai",
   "license": "MIT",
   "devDependencies": {
-    "@idraw/types": "^0.2.0-alpha.6"
+    "@idraw/types": "^0.2.0-alpha.7"
   },
   "dependencies": {
-    "@idraw/board": "^0.2.0-alpha.6",
-    "@idraw/util": "^0.2.0-alpha.6"
+    "@idraw/board": "^0.2.0-alpha.7",
+    "@idraw/util": "^0.2.0-alpha.7"
   },
   "publishConfig": {
     "access": "public"
diff --git a/packages/idraw/package.json b/packages/idraw/package.json
index a222a82..8dd0f24 100644
--- a/packages/idraw/package.json
+++ b/packages/idraw/package.json
@@ -1,6 +1,6 @@
 {
   "name": "idraw",
-  "version": "0.2.0-alpha.6",
+  "version": "0.2.0-alpha.7",
   "description": "",
   "main": "dist/index.cjs.js",
   "module": "dist/index.es.js",
@@ -23,11 +23,11 @@
   "author": "chenshenhai",
   "license": "MIT",
   "devDependencies": {
-    "@idraw/types": "^0.2.0-alpha.6"
+    "@idraw/types": "^0.2.0-alpha.7"
   },
   "dependencies": {
-    "@idraw/core": "^0.2.0-alpha.6",
-    "@idraw/util": "^0.2.0-alpha.6"
+    "@idraw/core": "^0.2.0-alpha.7",
+    "@idraw/util": "^0.2.0-alpha.7"
   },
   "publishConfig": {
     "access": "public"
diff --git a/packages/types/package.json b/packages/types/package.json
index c1f8251..07e87a6 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idraw/types",
-  "version": "0.2.0-alpha.6",
+  "version": "0.2.0-alpha.7",
   "description": "",
   "main": "src/index.ts",
   "types": "src/index.ts",
diff --git a/packages/util/package.json b/packages/util/package.json
index 2a680d9..ce324c9 100644
--- a/packages/util/package.json
+++ b/packages/util/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idraw/util",
-  "version": "0.2.0-alpha.6",
+  "version": "0.2.0-alpha.7",
   "description": "",
   "main": "dist/index.cjs.js",
   "module": "dist/index.es.js",