diff --git a/yarn.lock b/yarn.lock
index 727f6e4..5ed6cb6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1333,7 +1333,7 @@ caniuse-lite@^1.0.30000748, caniuse-lite@^1.0.30000784:
 
 capture-stack-trace@^1.0.0:
   version "1.0.0"
-  resolved "http://registry.npmjs.org/capture-stack-trace/-/capture-stack-trace-1.0.0.tgz#4a6fa07399c26bba47f0b2496b4d0fb408c5550d"
+  resolved "https://registry.npmjs.org/capture-stack-trace/-/capture-stack-trace-1.0.0.tgz#4a6fa07399c26bba47f0b2496b4d0fb408c5550d"
 
 case-sensitive-paths-webpack-plugin@2.1.1:
   version "2.1.1"
@@ -1668,7 +1668,7 @@ create-ecdh@^4.0.0:
 
 create-error-class@^3.0.1:
   version "3.0.2"
-  resolved "http://registry.npmjs.org/create-error-class/-/create-error-class-3.0.2.tgz#06be7abef947a3f14a30fd610671d401bca8b7b6"
+  resolved "https://registry.npmjs.org/create-error-class/-/create-error-class-3.0.2.tgz#06be7abef947a3f14a30fd610671d401bca8b7b6"
   dependencies:
     capture-stack-trace "^1.0.0"
 
@@ -2520,9 +2520,9 @@ event-emitter@~0.3.5:
     d "1"
     es5-ext "~0.10.14"
 
-eventemitter3@1.x.x:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-1.2.0.tgz#1c86991d816ad1e504750e73874224ecf3bec508"
+eventemitter3@^4.0.0:
+  version "4.0.7"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-4.0.7.tgz#2de9b68f6528d5644ef5c59526a1b4a07306169f"
 
 events@^1.0.0:
   version "1.1.1"
@@ -2810,6 +2810,10 @@ flatten@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/flatten/-/flatten-1.0.2.tgz#dae46a9d78fbe25292258cc1e780a41d95c03782"
 
+follow-redirects@^1.0.0:
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.0.tgz#b42e8d93a2a7eea5ed88633676d6597bc8e384db"
+
 for-in@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
@@ -3383,11 +3387,12 @@ http-proxy-middleware@~0.17.4:
     micromatch "^2.3.11"
 
 http-proxy@^1.16.2:
-  version "1.16.2"
-  resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.16.2.tgz#06dff292952bf64dbe8471fa9df73066d4f37742"
+  version "1.18.1"
+  resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.18.1.tgz#401541f0534884bbf95260334e72f88ee3976549"
   dependencies:
-    eventemitter3 "1.x.x"
-    requires-port "1.x.x"
+    eventemitter3 "^4.0.0"
+    follow-redirects "^1.0.0"
+    requires-port "^1.0.0"
 
 http-signature@~1.1.0:
   version "1.1.1"
@@ -5699,7 +5704,7 @@ react@^16.2.0:
 
 read-all-stream@^3.0.0:
   version "3.1.0"
-  resolved "http://registry.npmjs.org/read-all-stream/-/read-all-stream-3.1.0.tgz#35c3e177f2078ef789ee4bfafa4373074eaef4fa"
+  resolved "https://registry.npmjs.org/read-all-stream/-/read-all-stream-3.1.0.tgz#35c3e177f2078ef789ee4bfafa4373074eaef4fa"
   dependencies:
     pinkie-promise "^2.0.0"
     readable-stream "^2.0.0"
@@ -5970,7 +5975,7 @@ require-uncached@^1.0.3:
     caller-path "^0.1.0"
     resolve-from "^1.0.0"
 
-requires-port@1.0.x, requires-port@1.x.x, requires-port@~1.0.0:
+requires-port@1.0.x, requires-port@^1.0.0, requires-port@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/requires-port/-/requires-port-1.0.0.tgz#925d2601d39ac485e091cf0da5c6e694dc3dcaff"