diff --git a/package.json b/package.json
index b23b8e9..2359770 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "troisjs",
-  "version": "0.2.1",
+  "version": "0.2.2",
   "scripts": {
     "dev": "vite",
     "build": "vite build",
@@ -11,6 +11,7 @@
     "@rollup/plugin-replace": "^2.3.3",
     "@vitejs/plugin-vue": "^1.2.1",
     "@vue/compiler-sfc": "^3.0.11",
+    "cannon": "^0.6.2",
     "eslint": "^7.7.0",
     "eslint-config-airbnb-base": "^14.2.0",
     "eslint-config-standard": "^14.1.1",
diff --git a/src/components/physics/useCannon.js b/src/components/physics/useCannon.js
index 3cb27e1..380cd27 100644
--- a/src/components/physics/useCannon.js
+++ b/src/components/physics/useCannon.js
@@ -28,6 +28,7 @@ export default function useCannon(options) {
     removeMesh,
     step,
   };
+  return obj;
 
   function addMesh(mesh) {
     const shape = getShape(mesh.geometry);
@@ -189,6 +190,4 @@ export default function useCannon(options) {
     iMatrix[index + 14] = position.z;
     iMatrix[index + 15] = 1;
   }
-
-  return obj;
 }
diff --git a/src/core/Renderer.js b/src/core/Renderer.js
index 81dd73d..b40bc95 100644
--- a/src/core/Renderer.js
+++ b/src/core/Renderer.js
@@ -61,6 +61,8 @@ export default defineComponent({
     this.onMountedCallbacks.forEach(c => c());
   },
   beforeUnmount() {
+    this.beforeRenderCallbacks = [];
+    this.afterRenderCallbacks = [];
     this.raf = false;
     this.three.dispose();
   },