diff --git a/package.json b/package.json
index 00b14c0..1a02d3e 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "babel-polyfill": "^6.26.0",
     "babel-preset-es2015": "^6.24.1",
     "connect": "^3.2.0",
-    "es6-shim": "^0.35.3",
+    "es6-shim": "^0.35.6",
     "js-yaml": "^3.3.0",
     "mongodb": "^2.2.33",
     "react": "^16.0.0",
diff --git a/yarn.lock b/yarn.lock
index fb1a5da..9cfd522 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -233,11 +233,11 @@ babel-plugin-check-es2015-constants@^6.22.0:
 
 babel-plugin-syntax-class-properties@^6.8.0:
   version "6.13.0"
-  resolved "http://registry.npmjs.org/babel-plugin-syntax-class-properties/-/babel-plugin-syntax-class-properties-6.13.0.tgz#d7eb23b79a317f8543962c505b827c7d6cac27de"
+  resolved "https://registry.npmjs.org/babel-plugin-syntax-class-properties/-/babel-plugin-syntax-class-properties-6.13.0.tgz#d7eb23b79a317f8543962c505b827c7d6cac27de"
 
 babel-plugin-syntax-object-rest-spread@^6.8.0:
   version "6.13.0"
-  resolved "http://registry.npmjs.org/babel-plugin-syntax-object-rest-spread/-/babel-plugin-syntax-object-rest-spread-6.13.0.tgz#fd6536f2bce13836ffa3a5458c4903a597bb3bf5"
+  resolved "https://registry.npmjs.org/babel-plugin-syntax-object-rest-spread/-/babel-plugin-syntax-object-rest-spread-6.13.0.tgz#fd6536f2bce13836ffa3a5458c4903a597bb3bf5"
 
 babel-plugin-transform-class-properties@^6.24.1:
   version "6.24.1"
@@ -592,7 +592,7 @@ bytes@3.0.0:
 
 chalk@^1.1.3:
   version "1.1.3"
-  resolved "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
+  resolved "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
   dependencies:
     ansi-styles "^2.2.1"
     escape-string-regexp "^1.0.2"
@@ -762,9 +762,9 @@ es6-promise@3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-3.2.1.tgz#ec56233868032909207170c39448e24449dd1fc4"
 
-es6-shim@^0.35.3:
-  version "0.35.3"
-  resolved "https://registry.yarnpkg.com/es6-shim/-/es6-shim-0.35.3.tgz#9bfb7363feffff87a6cdb6cd93e405ec3c4b6f26"
+es6-shim@^0.35.6:
+  version "0.35.6"
+  resolved "https://registry.yarnpkg.com/es6-shim/-/es6-shim-0.35.6.tgz#d10578301a83af2de58b9eadb7c2c9945f7388a0"
 
 escape-html@~1.0.3:
   version "1.0.3"
@@ -1432,7 +1432,7 @@ minizlib@^1.1.0:
 
 mkdirp@^0.5.0, mkdirp@^0.5.1:
   version "0.5.1"
-  resolved "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
+  resolved "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
   dependencies:
     minimist "0.0.8"
 
@@ -1974,7 +1974,7 @@ strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
-superagent@^3.8.3:
+superagent@^3.5.2, superagent@^3.8.3:
   version "3.8.3"
   resolved "https://registry.yarnpkg.com/superagent/-/superagent-3.8.3.tgz#460ea0dbdb7d5b11bc4f78deba565f86a178e128"
   dependencies: