diff --git a/yarn.lock b/yarn.lock
index 9716f77..5e30d39 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -62,9 +62,9 @@ after@0.8.2:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/after/-/after-0.8.2.tgz#fedb394f9f0e02aa9768e702bda23b505fae7e1f"
 
-agent-base@4, agent-base@^4.0.1, agent-base@^4.1.0:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-4.1.1.tgz#92d8a4fc2524a3b09b3666a33b6c97960f23d6a4"
+agent-base@4, agent-base@^4.0.1, agent-base@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-4.3.0.tgz#8165f01c436009bccad0b1d122f05ed770efc6ee"
   dependencies:
     es6-promisify "^5.0.0"
 
@@ -1716,7 +1716,7 @@ de-indent@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/de-indent/-/de-indent-1.0.2.tgz#b2038e846dc33baa5796128d0804b455b8c1e21d"
 
-debug@2, debug@2.6.8, debug@^2.2.0, debug@^2.4.1, debug@^2.6.8:
+debug@2, debug@2.6.8, debug@^2.2.0, debug@^2.6.8:
   version "2.6.8"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
   dependencies:
@@ -1740,6 +1740,12 @@ debug@2.6.7:
   dependencies:
     ms "2.0.0"
 
+debug@^3.1.0:
+  version "3.2.6"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
+  dependencies:
+    ms "^2.1.1"
+
 debuglog@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/debuglog/-/debuglog-1.0.1.tgz#aa24ffb9ac3df9a2351837cfb2d279360cd78492"
@@ -2048,8 +2054,8 @@ es-to-primitive@^1.1.1:
     is-symbol "^1.0.1"
 
 es6-promise@^4.0.3:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.1.1.tgz#8811e90915d9a0dba36274f0b242dbda78f9c92a"
+  version "4.2.8"
+  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.8.tgz#4eb21594c972bc40553d276e510539143db53e0a"
 
 es6-promise@~4.0.3:
   version "4.0.5"
@@ -2992,11 +2998,11 @@ https-browserify@0.0.1:
   resolved "https://registry.yarnpkg.com/https-browserify/-/https-browserify-0.0.1.tgz#3f91365cabe60b77ed0ebba24b454e3e09d95a82"
 
 https-proxy-agent@^2.0.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/https-proxy-agent/-/https-proxy-agent-2.1.0.tgz#1391bee7fd66aeabc0df2a1fa90f58954f43e443"
+  version "2.2.4"
+  resolved "https://registry.yarnpkg.com/https-proxy-agent/-/https-proxy-agent-2.2.4.tgz#4ee7a737abd92678a293d9b34a1af4d0d08c787b"
   dependencies:
-    agent-base "^4.1.0"
-    debug "^2.4.1"
+    agent-base "^4.3.0"
+    debug "^3.1.0"
 
 humanize-ms@^1.2.1:
   version "1.2.1"
@@ -4134,6 +4140,10 @@ ms@2.0.0, ms@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
+ms@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+
 mute-stream@0.0.7, mute-stream@~0.0.4:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.7.tgz#3075ce93bc21b8fab43e1bc4da7e8115ed1e7bab"