diff --git a/package-lock.json b/package-lock.json
old mode 100755
new mode 100644
index a24748f..e29870b
--- a/package-lock.json
+++ b/package-lock.json
@@ -548,6 +548,11 @@
       "resolved": "https://registry.npm.taobao.org/csv-stringify/download/csv-stringify-5.4.3.tgz",
       "integrity": "sha1-aPLlllKve7J7sG/gWoI3/5W9E/k="
     },
+    "data-uri-to-buffer": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmmirror.com/data-uri-to-buffer/download/data-uri-to-buffer-4.0.0.tgz",
+      "integrity": "sha1-tdtGrqUPYXZCisBbc745pXcBpks="
+    },
     "debug": {
       "version": "4.1.1",
       "resolved": "https://registry.npm.taobao.org/debug/download/debug-4.1.1.tgz",
@@ -1009,6 +1014,15 @@
       "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=",
       "dev": true
     },
+    "fetch-blob": {
+      "version": "3.1.4",
+      "resolved": "https://registry.npmmirror.com/fetch-blob/download/fetch-blob-3.1.4.tgz",
+      "integrity": "sha512-Eq5Xv5+VlSrYWEqKrusxY1C3Hm/hjeAsCGVG3ft7pZahlUAChpGZT/Ms1WmSLnEAisEXszjzu/s+ce6HZB2VHA==",
+      "requires": {
+        "node-domexception": "^1.0.0",
+        "web-streams-polyfill": "^3.0.3"
+      }
+    },
     "figures": {
       "version": "3.1.0",
       "resolved": "https://registry.npm.taobao.org/figures/download/figures-3.1.0.tgz?cache=0&sync_timestamp=1571715201547&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ffigures%2Fdownload%2Ffigures-3.1.0.tgz",
@@ -1062,6 +1076,14 @@
         }
       }
     },
+    "formdata-polyfill": {
+      "version": "4.0.10",
+      "resolved": "https://registry.npmmirror.com/formdata-polyfill/download/formdata-polyfill-4.0.10.tgz",
+      "integrity": "sha1-JIB8McnUAuACqz2McgFEzriEhCM=",
+      "requires": {
+        "fetch-blob": "^3.1.2"
+      }
+    },
     "fresh": {
       "version": "0.5.2",
       "resolved": "https://registry.npm.taobao.org/fresh/download/fresh-0.5.2.tgz",
@@ -1912,10 +1934,20 @@
       "integrity": "sha1-ozeKdpbOfSI+iPybdkvX7xCJ42Y=",
       "dev": true
     },
+    "node-domexception": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmmirror.com/node-domexception/download/node-domexception-1.0.0.tgz",
+      "integrity": "sha1-aIjbRqH3HAt2s/dVUBa2P+ZHZuU="
+    },
     "node-fetch": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npm.taobao.org/node-fetch/download/node-fetch-2.6.0.tgz?cache=0&sync_timestamp=1563674529793&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fnode-fetch%2Fdownload%2Fnode-fetch-2.6.0.tgz",
-      "integrity": "sha1-5jNFY4bUqlWGP2dqerDaqP3ssP0="
+      "version": "3.1.1",
+      "resolved": "https://registry.npmmirror.com/node-fetch/download/node-fetch-3.1.1.tgz",
+      "integrity": "sha512-SMk+vKgU77PYotRdWzqZGTZeuFKlsJ0hu4KPviQKkfY+N3vn2MIzr0rvpnYpR8MtB3IEuhlEcuOLbGvLRlA+yg==",
+      "requires": {
+        "data-uri-to-buffer": "^4.0.0",
+        "fetch-blob": "^3.1.3",
+        "formdata-polyfill": "^4.0.10"
+      }
     },
     "nopt": {
       "version": "4.0.1",
@@ -2834,6 +2866,11 @@
       "resolved": "https://registry.npm.taobao.org/void-elements/download/void-elements-2.0.1.tgz",
       "integrity": "sha1-wGavtYK7HLQSjWDqkjkulNXp2+w="
     },
+    "web-streams-polyfill": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmmirror.com/web-streams-polyfill/download/web-streams-polyfill-3.2.0.tgz",
+      "integrity": "sha1-prdAJrOOSIWGn7XFiekLlcz8eWU="
+    },
     "window-size": {
       "version": "0.1.0",
       "resolved": "https://registry.npm.taobao.org/window-size/download/window-size-0.1.0.tgz",
diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index 019d68f..49dd39f
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "koa-views": "^6.2.0",
     "koa2-cors": "^2.0.6",
     "moment-timezone": "^0.5.27",
-    "node-fetch": "^2.6.0",
+    "node-fetch": "^3.1.1",
     "pug": "^2.0.3",
     "socket.io": "^2.3.0",
     "yl-mem-cache": "^1.0.0"