diff --git a/demo/yarn.lock b/demo/yarn.lock
index aa29fbf..5030433 100644
--- a/demo/yarn.lock
+++ b/demo/yarn.lock
@@ -3023,9 +3023,10 @@ event-pubsub@4.3.0:
   version "4.3.0"
   resolved "http://registry.npm.taobao.org/event-pubsub/download/event-pubsub-4.3.0.tgz#f68d816bc29f1ec02c539dc58c8dd40ce72cb36e"
 
-eventemitter3@^3.0.0:
-  version "3.1.0"
-  resolved "http://registry.npm.taobao.org/eventemitter3/download/eventemitter3-3.1.0.tgz#090b4d6cdbd645ed10bf750d4b5407942d7ba163"
+eventemitter3@^4.0.0:
+  version "4.0.7"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-4.0.7.tgz#2de9b68f6528d5644ef5c59526a1b4a07306169f"
+  integrity sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw==
 
 events@^1.0.0:
   version "1.1.1"
@@ -3343,10 +3344,9 @@ flush-write-stream@^1.0.0:
     readable-stream "^2.0.4"
 
 follow-redirects@^1.0.0:
-  version "1.5.5"
-  resolved "http://registry.npm.taobao.org/follow-redirects/download/follow-redirects-1.5.5.tgz#3c143ca599a2e22e62876687d68b23d55bad788b"
-  dependencies:
-    debug "^3.1.0"
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.0.tgz#b42e8d93a2a7eea5ed88633676d6597bc8e384db"
+  integrity sha512-aq6gF1BEKje4a9i9+5jimNFIpq4Q1WiwBToeRK5NvZBd/TRsmW8BsJfOEGkr76TbOyPVD3OVDN910EcUNtRYEA==
 
 for-in@^1.0.1, for-in@^1.0.2:
   version "1.0.2"
@@ -3776,10 +3776,11 @@ http-proxy-middleware@~0.18.0:
     micromatch "^3.1.9"
 
 http-proxy@^1.16.2:
-  version "1.17.0"
-  resolved "http://registry.npm.taobao.org/http-proxy/download/http-proxy-1.17.0.tgz#7ad38494658f84605e2f6db4436df410f4e5be9a"
+  version "1.18.1"
+  resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.18.1.tgz#401541f0534884bbf95260334e72f88ee3976549"
+  integrity sha512-7mz/721AbnJwIVbnaSv1Cz3Am0ZLT/UBwkC92VlxhXv/k/BBQfM2fXElQNC27BVGr0uwUpplYPQM9LnaBMR5NQ==
   dependencies:
-    eventemitter3 "^3.0.0"
+    eventemitter3 "^4.0.0"
     follow-redirects "^1.0.0"
     requires-port "^1.0.0"
 
@@ -6008,7 +6009,8 @@ require-uncached@^1.0.3:
 
 requires-port@^1.0.0:
   version "1.0.0"
-  resolved "http://registry.npm.taobao.org/requires-port/download/requires-port-1.0.0.tgz#925d2601d39ac485e091cf0da5c6e694dc3dcaff"
+  resolved "https://registry.yarnpkg.com/requires-port/-/requires-port-1.0.0.tgz#925d2601d39ac485e091cf0da5c6e694dc3dcaff"
+  integrity sha1-kl0mAdOaxIXgkc8NpcbmlNw9yv8=
 
 resolve-cwd@^2.0.0:
   version "2.0.0"