diff --git a/yarn.lock b/yarn.lock
index 4688136..49cddca 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -766,8 +766,8 @@ block-stream@*:
     inherits "~2.0.0"
 
 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"
 
 boom@2.x.x:
   version "2.10.1"
@@ -1637,8 +1637,8 @@ electron-to-chromium@^1.2.3, electron-to-chromium@^1.3.11:
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.14.tgz#64af0f9efd3c3c6acd57d71f83b49ca7ee9c4b43"
 
 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"
@@ -2661,10 +2661,11 @@ 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"
@@ -2680,8 +2681,8 @@ he@1.1.x:
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
 
 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"
@@ -2791,8 +2792,8 @@ inherits@1:
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-1.0.2.tgz#ca4309dadee6b54cc0b8d247e8d7c7a0975bdc9b"
 
 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"
@@ -3515,10 +3516,6 @@ lower-case@^1.1.1:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/lower-case/-/lower-case-1.1.4.tgz#9a2cabd1b9e8e0ae993a4bf7d5875c39c42e8eac"
 
-lru-cache@2:
-  version "2.7.3"
-  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-2.7.3.tgz#6d4524e8b955f95d4f5b58851ce21dd72fb4e952"
-
 lru-cache@^4.0.1:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-4.0.2.tgz#1d17679c069cda5d040991a09dbc2c0db377e55e"
@@ -3660,45 +3657,25 @@ mimic-fn@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.1.0.tgz#e667783d92e89dbd342818b5230b9d62a672ad18"
 
-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"
   resolved "https://registry.yarnpkg.com/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz#f6c00c1c0b082246e5c4d99dfb8c7c083b2b582a"
 
-minimatch@0.3:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-0.3.0.tgz#275d8edaac4f1bb3326472089e7949c8394699dd"
-  dependencies:
-    lru-cache "2"
-    sigmund "~1.0.0"
-
-"minimatch@2 || 3", minimatch@^3.0.0, minimatch@^3.0.3, minimatch@^3.0.4, minimatch@~3.0.2:
-  version "3.0.4"
-  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
-  dependencies:
-    brace-expansion "^1.1.7"
-
-minimatch@^2.0.1:
-  version "2.0.10"
-  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-2.0.10.tgz#8d087c39c6b38c001b97fca7ce6d0e1e80afbac7"
-  dependencies:
-    brace-expansion "^1.0.0"
-
 minimatch@^3.0.2:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.3.tgz#2a4e4090b96b2db06a9d7df01055a62a77c9b774"
   dependencies:
     brace-expansion "^1.0.0"
 
-minimatch@~0.2.11:
-  version "0.2.14"
-  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-0.2.14.tgz#c74e780574f63c6f9a090e90efbe6ef53a6a756a"
+minimatch@^3.0.3, minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
   dependencies:
-    lru-cache "2"
-    sigmund "~1.0.0"
+    brace-expansion "^1.1.7"
 
 minimist@0.0.8, minimist@~0.0.1:
   version "0.0.8"
@@ -5050,10 +5027,6 @@ shellwords@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/shellwords/-/shellwords-0.1.0.tgz#66afd47b6a12932d9071cbfd98a52e785cd0ba14"
 
-sigmund@~1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/sigmund/-/sigmund-1.0.1.tgz#3ff21f198cad2175f9f3b781853fd94d0d19b590"
-
 signal-exit@^3.0.0, signal-exit@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"