diff --git a/package.json b/package.json
index b175186..7309a44 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,9 @@
     "report-coverage": "nyc report --reporter=lcov > coverage.lcov && codecov"
   },
   "lint-staged": {
-    "*.js": ["eslint"]
+    "*.js": [
+      "eslint"
+    ]
   },
   "devDependencies": {
     "ava": "^0.19.1",
@@ -56,7 +58,6 @@
     "rimraf": "^2.5.4",
     "sinon": "^2.3.4",
     "webpack": "^3.0.0"
-    "sinon": "^2.3.4",
   },
   "dependencies": {
     "browser-resolve": "^1.11.2",
diff --git a/yarn.lock b/yarn.lock
index a78b071..1ee4941 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -971,8 +971,8 @@ base-x@^3.0.2:
     safe-buffer "^5.0.1"
 
 base64-js@^1.0.2:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/base64-js/-/base64-js-1.2.0.tgz#a39992d723584811982be5e290bb6a53d86700f1"
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/base64-js/-/base64-js-1.2.1.tgz#a91947da1f4a516ea38e5b4ec0ec3773675e0886"
 
 bcrypt-pbkdf@^1.0.0:
   version "1.0.1"
@@ -3573,7 +3573,14 @@ node-fetch@1.5.1:
     encoding "^0.1.11"
     is-stream "^1.0.1"
 
-node-fetch@^1.0.1, node-fetch@~1.6.0:
+node-fetch@^1.0.1:
+  version "1.7.1"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.1.tgz#899cb3d0a3c92f952c47f1b876f4c8aeabd400d5"
+  dependencies:
+    encoding "^0.1.11"
+    is-stream "^1.0.1"
+
+node-fetch@~1.6.0:
   version "1.6.3"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.6.3.tgz#dc234edd6489982d58e8f0db4f695029abcd8c04"
   dependencies:
@@ -4236,8 +4243,8 @@ read@^1.0.7:
     mute-stream "~0.0.4"
 
 readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.5, readable-stream@^2.0.6, readable-stream@^2.1.4, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@^2.2.6:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.0.tgz#640f5dcda88c91a8dc60787145629170813a1ed2"
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.1.tgz#84e26965bb9e785535ed256e8d38e92c69f09d10"
   dependencies:
     core-util-is "~1.0.0"
     inherits "~2.0.3"
@@ -4522,8 +4529,8 @@ rxjs@^5.0.0-beta.11:
     symbol-observable "^1.0.1"
 
 safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@~5.1.0:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.0.tgz#fe4c8460397f9eaaaa58e73be46273408a45e223"
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
 safe-buffer@~5.0.1:
   version "5.0.1"