diff --git a/yarn.lock b/yarn.lock
index d1e94c3..d175a40 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -983,8 +983,8 @@ bluebird@^3.4.7:
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.4.7.tgz#f72d760be09b7f76d08ed8fae98b289a8d05fab3"
 
 bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.4.0:
-  version "4.11.6"
-  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.6.tgz#53344adb14617a13f6e8dd2ce28905d1c0ba3215"
+  version "4.11.9"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.9.tgz#26d556829458f9d1e81fc48952493d0ba3507828"
 
 boolbase@~1.0.0:
   version "1.0.0"
@@ -1789,8 +1789,8 @@ electron-to-chromium@^1.2.3:
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.2.5.tgz#d373727228843dfd8466c276089f13b40927a952"
 
 elliptic@^6.0.0:
-  version "6.4.0"
-  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.0.tgz#cac9af8762c85836187003c8dfe193e5e2eae5df"
+  version "6.5.3"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.3.tgz#cb59eb2efdaf73a0bd78ccd7015a62ad6e0f93d6"
   dependencies:
     bn.js "^4.4.0"
     brorand "^1.0.1"
@@ -2408,10 +2408,11 @@ has@^1.0.1:
     function-bind "^1.0.2"
 
 hash.js@^1.0.0, hash.js@^1.0.3:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.0.3.tgz#1332ff00156c0a0ffdd8236013d07b77a0451573"
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.7.tgz#0babca538e8d4ee4a0f8988d68866537a003cf42"
   dependencies:
-    inherits "^2.0.1"
+    inherits "^2.0.3"
+    minimalistic-assert "^1.0.1"
 
 hawk@~3.1.3:
   version "3.1.3"
@@ -2435,8 +2436,8 @@ highlight.js@~9.12.0:
   resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.12.0.tgz#e6d9dbe57cbefe60751f02af336195870c90c01e"
 
 hmac-drbg@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.0.tgz#3db471f45aae4a994a0688322171f51b8b91bee5"
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
   dependencies:
     hash.js "^1.0.3"
     minimalistic-assert "^1.0.0"
@@ -2562,8 +2563,8 @@ inflight@^1.0.4:
     wrappy "1"
 
 inherits@2, inherits@^2.0.1, inherits@^2.0.3, inherits@~2.0.0, inherits@~2.0.1:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
 
 inherits@2.0.1:
   version "2.0.1"
@@ -2727,7 +2728,7 @@ is-plain-obj@^1.0.0:
 
 is-posix-bracket@^0.1.0:
   version "0.1.1"
-  resolved "http://registry.npmjs.org/is-posix-bracket/-/is-posix-bracket-0.1.1.tgz#3334dc79774368e92f016e6fbc0a88f5cd6e6bc4"
+  resolved "https://registry.npmjs.org/is-posix-bracket/-/is-posix-bracket-0.1.1.tgz#3334dc79774368e92f016e6fbc0a88f5cd6e6bc4"
 
 is-primitive@^2.0.0:
   version "2.0.0"
@@ -3063,9 +3064,9 @@ mime@^1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.3.4.tgz#115f9e3b6b3daf2959983cb38f149a2d40eb5d53"
 
-minimalistic-assert@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.0.tgz#702be2dda6b37f4836bcb3f5db56641b64a1d3d3"
+minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
 
 minimalistic-crypto-utils@^1.0.0, minimalistic-crypto-utils@^1.0.1:
   version "1.0.1"
@@ -3700,7 +3701,7 @@ postcss-loader@^1.2.1:
 
 postcss-media-minmax@^2.1.0:
   version "2.1.2"
-  resolved "http://registry.npmjs.org/postcss-media-minmax/-/postcss-media-minmax-2.1.2.tgz#444c5cf8926ab5e4fd8a2509e9297e751649cdf8"
+  resolved "https://registry.npmjs.org/postcss-media-minmax/-/postcss-media-minmax-2.1.2.tgz#444c5cf8926ab5e4fd8a2509e9297e751649cdf8"
   dependencies:
     postcss "^5.0.4"