diff --git a/yarn.lock b/yarn.lock
index 225ede0..589a3a1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -256,7 +256,7 @@ babel-messages@^6.23.0:
 
 babel-plugin-istanbul@^4.1.6:
   version "4.1.6"
-  resolved "http://registry.npmjs.org/babel-plugin-istanbul/-/babel-plugin-istanbul-4.1.6.tgz#36c59b2192efce81c5b378321b74175add1c9a45"
+  resolved "https://registry.npmjs.org/babel-plugin-istanbul/-/babel-plugin-istanbul-4.1.6.tgz#36c59b2192efce81c5b378321b74175add1c9a45"
   dependencies:
     babel-plugin-syntax-object-rest-spread "^6.13.0"
     find-up "^2.1.0"
@@ -269,7 +269,7 @@ babel-plugin-jest-hoist@^23.2.0:
 
 babel-plugin-syntax-object-rest-spread@^6.13.0:
   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-preset-jest@^23.2.0:
   version "23.2.0"
@@ -444,7 +444,7 @@ caseless@~0.12.0:
 
 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"
@@ -462,7 +462,7 @@ chalk@^2.0.0, chalk@^2.0.1:
 
 chalk@~0.4.0:
   version "0.4.0"
-  resolved "http://registry.npmjs.org/chalk/-/chalk-0.4.0.tgz#5199a3ddcd0c1efe23bc08c1b027b06176e0c64f"
+  resolved "https://registry.npmjs.org/chalk/-/chalk-0.4.0.tgz#5199a3ddcd0c1efe23bc08c1b027b06176e0c64f"
   dependencies:
     ansi-styles "~1.0.0"
     has-color "~0.1.0"
@@ -1817,7 +1817,7 @@ json5@^0.5.1:
 
 jsonfile@^2.0.0:
   version "2.4.0"
-  resolved "http://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz#3736a2b428b87bbda0cc83b53fa3d633a35c2ae8"
+  resolved "https://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz#3736a2b428b87bbda0cc83b53fa3d633a35c2ae8"
   optionalDependencies:
     graceful-fs "^4.1.6"
 
@@ -1898,7 +1898,7 @@ lodash.sortby@^4.7.0:
 
 lodash@^3.5.0:
   version "3.10.1"
-  resolved "http://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
+  resolved "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
 lodash@^4.13.1, lodash@^4.17.10, lodash@^4.17.4:
   version "4.17.10"
@@ -1906,7 +1906,7 @@ lodash@^4.13.1, lodash@^4.17.10, lodash@^4.17.4:
 
 lodash@~2.4.1:
   version "2.4.2"
-  resolved "http://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz#fadd834b9683073da179b3eae6d9c0d15053f73e"
+  resolved "https://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz#fadd834b9683073da179b3eae6d9c0d15053f73e"
 
 loose-envify@^1.0.0:
   version "1.4.0"
@@ -1958,8 +1958,8 @@ merge-stream@^1.0.1:
     readable-stream "^2.0.1"
 
 merge@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/merge/-/merge-1.2.0.tgz#7531e39d4949c281a66b8c5a6e0265e8b05894da"
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/merge/-/merge-1.2.1.tgz#38bebf80c3220a8a487b6fcfb3941bb11720c145"
 
 micromatch@^2.3.11:
   version "2.3.11"
@@ -2019,11 +2019,11 @@ minimatch@^3.0.3, minimatch@^3.0.4:
 
 minimist@0.0.8, minimist@~0.0.1:
   version "0.0.8"
-  resolved "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
+  resolved "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
 
 minimist@^1.1.1, minimist@^1.2.0:
   version "1.2.0"
-  resolved "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
+  resolved "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
 
 minipass@^2.2.1, minipass@^2.3.3:
   version "2.3.4"
@@ -2047,7 +2047,7 @@ mixin-deep@^1.2.0:
 
 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"
 
@@ -3124,7 +3124,7 @@ wide-align@^1.1.0:
 
 winston@^0.9.0:
   version "0.9.0"
-  resolved "http://registry.npmjs.org/winston/-/winston-0.9.0.tgz#b5726e6c42291e305e36286ce7ae9f3b74a527a8"
+  resolved "https://registry.npmjs.org/winston/-/winston-0.9.0.tgz#b5726e6c42291e305e36286ce7ae9f3b74a527a8"
   dependencies:
     async "0.9.x"
     colors "1.0.x"
@@ -3144,7 +3144,7 @@ wordwrap@~1.0.0:
 
 wrap-ansi@^2.0.0:
   version "2.1.0"
-  resolved "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz#d8fc3d284dd05794fe84973caecdd1cf824fdd85"
+  resolved "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz#d8fc3d284dd05794fe84973caecdd1cf824fdd85"
   dependencies:
     string-width "^1.0.1"
     strip-ansi "^3.0.1"
@@ -3195,7 +3195,7 @@ yargs-parser@^9.0.2:
 
 yargs@^11.0.0:
   version "11.1.0"
-  resolved "http://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz#90b869934ed6e871115ea2ff58b03f4724ed2d77"
+  resolved "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz#90b869934ed6e871115ea2ff58b03f4724ed2d77"
   dependencies:
     cliui "^4.0.0"
     decamelize "^1.1.1"