diff --git a/lerna.json b/lerna.json
index 400b1f5..a6dddb5 100644
--- a/lerna.json
+++ b/lerna.json
@@ -7,5 +7,5 @@
     "packages/core",
     "packages/idraw"
   ],
-  "version": "0.3.0-alpha.7"
+  "version": "0.3.0-alpha.8"
 }
diff --git a/packages/board/package.json b/packages/board/package.json
index 4233b15..f77028f 100644
--- a/packages/board/package.json
+++ b/packages/board/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idraw/board",
-  "version": "0.3.0-alpha.7",
+  "version": "0.3.0-alpha.8",
   "description": "",
   "main": "dist/esm/index.js",
   "module": "dist/esm/index.js",
@@ -21,10 +21,10 @@
   "author": "chenshenhai",
   "license": "MIT",
   "devDependencies": {
-    "@idraw/types": "^0.3.0-alpha.7"
+    "@idraw/types": "^0.3.0-alpha.8"
   },
   "dependencies": {
-    "@idraw/util": "^0.3.0-alpha.7"
+    "@idraw/util": "^0.3.0-alpha.8"
   },
   "publishConfig": {
     "access": "public"
diff --git a/packages/core/package.json b/packages/core/package.json
index 8d0bea0..b5c4e7b 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idraw/core",
-  "version": "0.3.0-alpha.7",
+  "version": "0.3.0-alpha.8",
   "description": "",
   "main": "dist/esm/index.js",
   "module": "dist/esm/index.js",
@@ -21,12 +21,12 @@
   "author": "chenshenhai",
   "license": "MIT",
   "devDependencies": {
-    "@idraw/types": "^0.3.0-alpha.7"
+    "@idraw/types": "^0.3.0-alpha.8"
   },
   "dependencies": {
-    "@idraw/board": "^0.3.0-alpha.7",
-    "@idraw/renderer": "^0.3.0-alpha.7",
-    "@idraw/util": "^0.3.0-alpha.7"
+    "@idraw/board": "^0.3.0-alpha.8",
+    "@idraw/renderer": "^0.3.0-alpha.8",
+    "@idraw/util": "^0.3.0-alpha.8"
   },
   "publishConfig": {
     "access": "public"
diff --git a/packages/idraw/package.json b/packages/idraw/package.json
index 20b26ce..37d17c3 100644
--- a/packages/idraw/package.json
+++ b/packages/idraw/package.json
@@ -1,6 +1,6 @@
 {
   "name": "idraw",
-  "version": "0.3.0-alpha.7",
+  "version": "0.3.0-alpha.8",
   "description": "",
   "main": "dist/esm/index.js",
   "module": "dist/esm/index.js",
@@ -21,11 +21,11 @@
   "author": "chenshenhai",
   "license": "MIT",
   "devDependencies": {
-    "@idraw/types": "^0.3.0-alpha.7"
+    "@idraw/types": "^0.3.0-alpha.8"
   },
   "dependencies": {
-    "@idraw/core": "^0.3.0-alpha.7",
-    "@idraw/util": "^0.3.0-alpha.7"
+    "@idraw/core": "^0.3.0-alpha.8",
+    "@idraw/util": "^0.3.0-alpha.8"
   },
   "publishConfig": {
     "access": "public"
diff --git a/packages/renderer/package.json b/packages/renderer/package.json
index d6f87de..7a43442 100644
--- a/packages/renderer/package.json
+++ b/packages/renderer/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idraw/renderer",
-  "version": "0.3.0-alpha.7",
+  "version": "0.3.0-alpha.8",
   "description": "",
   "main": "dist/esm/index.js",
   "module": "dist/esm/index.js",
@@ -21,10 +21,10 @@
   "author": "chenshenhai",
   "license": "MIT",
   "devDependencies": {
-    "@idraw/types": "^0.3.0-alpha.7"
+    "@idraw/types": "^0.3.0-alpha.8"
   },
   "dependencies": {
-    "@idraw/util": "^0.3.0-alpha.7"
+    "@idraw/util": "^0.3.0-alpha.8"
   },
   "publishConfig": {
     "access": "public"
diff --git a/packages/types/package.json b/packages/types/package.json
index 843dd10..aacc9a4 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idraw/types",
-  "version": "0.3.0-alpha.7",
+  "version": "0.3.0-alpha.8",
   "description": "",
   "main": "src/index.ts",
   "types": "src/index.ts",
diff --git a/packages/util/package.json b/packages/util/package.json
index 8834458..c990e74 100644
--- a/packages/util/package.json
+++ b/packages/util/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idraw/util",
-  "version": "0.3.0-alpha.7",
+  "version": "0.3.0-alpha.8",
   "description": "",
   "main": "dist/esm/index.js",
   "module": "dist/esm/index.js",
@@ -21,7 +21,7 @@
   "author": "chenshenhai",
   "license": "MIT",
   "devDependencies": {
-    "@idraw/types": "^0.3.0-alpha.7"
+    "@idraw/types": "^0.3.0-alpha.8"
   },
   "publishConfig": {
     "access": "public"