diff --git a/yarn.lock b/yarn.lock
index fc31d23..374c956 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2100,7 +2100,7 @@ debug@2.6.7:
   dependencies:
     ms "2.0.0"
 
-debug@2.6.8, debug@^2.1.1, debug@^2.2.0, debug@^2.4.5, debug@^2.6.6, debug@^2.6.8:
+debug@2.6.8, debug@^2.1.1, debug@^2.2.0, debug@^2.6.6, debug@^2.6.8:
   version "2.6.8"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
   integrity sha1-5zFTHKLt4n0YgiJCfaF4IdaP9Pw=
@@ -2837,10 +2837,10 @@ ethjs-util@^0.1.3:
     is-hex-prefixed "1.0.0"
     strip-hex-prefix "1.0.0"
 
-eventemitter3@1.x.x:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-1.2.0.tgz#1c86991d816ad1e504750e73874224ecf3bec508"
-  integrity sha1-HIaZHYFq0eUEdQ5zh0Ik7PO+xQg=
+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"
@@ -3111,12 +3111,10 @@ flexboxgrid@^6.3.1:
   resolved "https://registry.yarnpkg.com/flexboxgrid/-/flexboxgrid-6.3.1.tgz#e99898afc07b7047722bb81a958a5fba4d4e20fd"
   integrity sha1-6ZiYr8B7cEdyK7galYpfuk1OIP0=
 
-follow-redirects@^1.2.3:
-  version "1.2.4"
-  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.2.4.tgz#355e8f4d16876b43f577b0d5ce2668b9723214ea"
-  integrity sha512-Suw6KewLV2hReSyEOeql+UUkBVyiBm3ok1VPrVFRZnQInWpdoZbbiG5i8aJVSjTr0yQ4Ava0Sh6/joCg1Brdqw==
-  dependencies:
-    debug "^2.4.5"
+follow-redirects@^1.0.0, follow-redirects@^1.2.3:
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.0.tgz#b42e8d93a2a7eea5ed88633676d6597bc8e384db"
+  integrity sha512-aq6gF1BEKje4a9i9+5jimNFIpq4Q1WiwBToeRK5NvZBd/TRsmW8BsJfOEGkr76TbOyPVD3OVDN910EcUNtRYEA==
 
 for-each@^0.3.2, for-each@~0.3.2:
   version "0.3.2"
@@ -3565,12 +3563,13 @@ 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"
-  integrity sha1-Bt/ykpUr9k2+hHH6nfcwZtTzd0I=
+  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 "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"
@@ -6139,7 +6138,7 @@ 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.x, requires-port@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/requires-port/-/requires-port-1.0.0.tgz#925d2601d39ac485e091cf0da5c6e694dc3dcaff"
   integrity sha1-kl0mAdOaxIXgkc8NpcbmlNw9yv8=