diff --git a/package.json b/package.json
index 57e38c0..17730fd 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
   "author": "cx",
   "license": "ISC",
   "devDependencies": {
+    "@types/three": "^0.92.25",
     "@types/hard-source-webpack-plugin": "^0.9.0",
     "@types/node": "^10.11.7",
     "@types/uglifyjs-webpack-plugin": "^1.1.0",
@@ -39,7 +40,6 @@
   },
   "dependencies": {
     "three": "^0.95.0",
-    "@types/three": "^0.92.25",
     "wolfy87-eventemitter": "^5.2.5"
   }
 }
diff --git a/src/PlaneExt.ts b/src/PlaneExt.ts
index c47fe69..5a6ecff 100644
--- a/src/PlaneExt.ts
+++ b/src/PlaneExt.ts
@@ -1,9 +1,9 @@
 import * as THREE from 'three';
-import { Vector3, Line3 } from "three";
+import { Vector3, Line3, Plane } from "three";
 
-export class PlaneExt extends THREE.Plane
+export class PlaneExt extends Plane
 {
-    constructor(normal?: THREE.Vector3, constant?: number)
+    constructor(normal?: Vector3, constant?: number)
     {
         super(normal, constant);
     }
diff --git a/src/Text.ts b/src/Text.ts
index 5c6ca84..a37f69c 100644
--- a/src/Text.ts
+++ b/src/Text.ts
@@ -1,4 +1,4 @@
-import { Font, FontLoader, Mesh, ShapeGeometry, Vector3 } from "three";
+import { Font, FontLoader, Mesh, ShapeGeometry, Vector3, Shape } from "three";
 import { ColorMaterial } from "./ColorPalette";
 import { MoveMatrix } from "./GeUtils";
 
@@ -30,7 +30,7 @@ export class DbText extends Mesh
   {
     let font = FontLoaderUtil.Load();
 
-    let shapes: THREE.Shape[] = font.generateShapes(str, height, 0.1);
+    let shapes: Shape[] = font.generateShapes(str, height, 0.1);
     let geometry = new ShapeGeometry(shapes);
 
     geometry.computeBoundingBox();
diff --git a/src/Utils.ts b/src/Utils.ts
index 16cbfc8..d4ea5c9 100644
--- a/src/Utils.ts
+++ b/src/Utils.ts
@@ -1,4 +1,4 @@
-import { Object3D } from "three";
+import { Object3D, Mesh } from "three";
 import { createTemplateBoard, DrawDimension, Viewer, selectMaterial } from ".";
 
 function dispose(m: Object3D)
@@ -12,7 +12,7 @@ function dispose(m: Object3D)
 }
 
 
-let blockMeshs: THREE.Mesh[];
+let blockMeshs: Mesh[];
 let dataRelations: {
     blockMeshMap: Map<number, number>,
     meshBlockMap: Map<number, number>