diff --git a/package-lock.json b/package-lock.json
index 655008b..27d9a11 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -54,15 +54,14 @@
       "integrity": "sha1-PdIm8RyrQSzr8LP40rf2m7/umU8="
     },
     "@tensorflow/tfjs-core": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npm.taobao.org/@tensorflow/tfjs-core/download/@tensorflow/tfjs-core-2.1.0.tgz",
-      "integrity": "sha1-dGvj21bHlDuoSAxw91cIStScetE=",
+      "version": "2.8.6",
+      "resolved": "https://registry.npmjs.org/@tensorflow/tfjs-core/-/tfjs-core-2.8.6.tgz",
+      "integrity": "sha512-jS28M1POUOjnWgx3jp1v5D45DUQE8USsAHHkL/01z75KnYCAAmgqJSH4YKLiYACg3eBLWXH/KTcSc6dHAX7Kfg==",
       "requires": {
-        "@types/offscreencanvas": "2019.3.0",
+        "@types/offscreencanvas": "~2019.3.0",
         "@types/seedrandom": "2.4.27",
         "@types/webgl-ext": "0.0.30",
-        "@types/webgl2": "0.0.4",
-        "node-fetch": "2.1.2",
+        "node-fetch": "~2.6.1",
         "seedrandom": "2.4.3"
       }
     },
@@ -161,9 +160,12 @@
       }
     },
     "node-fetch": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npm.taobao.org/node-fetch/download/node-fetch-2.1.2.tgz?cache=0&sync_timestamp=1599309667528&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fnode-fetch%2Fdownload%2Fnode-fetch-2.1.2.tgz",
-      "integrity": "sha1-q4hOjn5X44qUR1POxwb3iNF2i7U="
+      "version": "2.6.9",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.9.tgz",
+      "integrity": "sha512-DJm/CJkZkRjKKj4Zi4BsKVZh3ValV5IR5s7LVZnW+6YMh0W1BfNA8XSs6DLMGYlId5F3KnA70uu2qepcR08Qqg==",
+      "requires": {
+        "whatwg-url": "^5.0.0"
+      }
     },
     "once": {
       "version": "1.4.0",
@@ -201,6 +203,25 @@
       "resolved": "https://registry.npm.taobao.org/threejs-miniprogram/download/threejs-miniprogram-0.0.2.tgz",
       "integrity": "sha1-XKYB6hXNiuuazLYe5GeS7tq8uTM="
     },
+    "tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw=="
+    },
+    "webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ=="
+    },
+    "whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
+      "requires": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npm.taobao.org/wrappy/download/wrappy-1.0.2.tgz",
diff --git a/package.json b/package.json
index 3a7eb5f..4ac65f9 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "@tensorflow-models/handpose": "0.0.6",
     "@tensorflow/tfjs-backend-webgl": "2.1.0",
     "@tensorflow/tfjs-converter": "2.1.0",
-    "@tensorflow/tfjs-core": "2.1.0",
+    "@tensorflow/tfjs-core": "2.8.6",
     "abab": "2.0.0",
     "base64-js": "1.3.1",
     "fetch-wechat": "0.0.3",