diff --git a/app/yarn.lock b/app/yarn.lock
index 7079985..06e6a9d 100644
--- a/app/yarn.lock
+++ b/app/yarn.lock
@@ -1372,13 +1372,14 @@ bignumber.js@^2.1.4:
   resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-2.4.0.tgz#838a992da9f9d737e0f4b2db0be62bb09dd0c5e8"
   integrity sha1-g4qZLan51zfg9LLbC+YrsJ3Qxeg=
 
-"bignumber.js@git+https://github.com/debris/bignumber.js.git#94d7146671b9719e00a09c29b01a691bc85048c2":
+"bignumber.js@git+https://github.com/debris/bignumber.js#master":
   version "2.0.7"
-  resolved "git+https://github.com/debris/bignumber.js.git#94d7146671b9719e00a09c29b01a691bc85048c2"
+  uid c7a38de919ed75e6fb6ba38051986e294b328df9
+  resolved "git+https://github.com/debris/bignumber.js#c7a38de919ed75e6fb6ba38051986e294b328df9"
 
-"bignumber.js@git+https://github.com/debris/bignumber.js.git#master":
+"bignumber.js@git+https://github.com/debris/bignumber.js.git#94d7146671b9719e00a09c29b01a691bc85048c2":
   version "2.0.7"
-  resolved "git+https://github.com/debris/bignumber.js.git#c7a38de919ed75e6fb6ba38051986e294b328df9"
+  resolved "git+https://github.com/debris/bignumber.js.git#94d7146671b9719e00a09c29b01a691bc85048c2"
 
 binary-extensions@^1.0.0:
   version "1.13.1"
@@ -2782,7 +2783,7 @@ ethereumjs-util@^4.0.1, ethereumjs-util@^4.5.0:
     ethereum-cryptography "^0.1.3"
     rlp "^2.0.0"
 
-ethereumjs-util@^5.0.0, ethereumjs-util@^5.0.1, ethereumjs-util@^5.1.1:
+ethereumjs-util@^5.0.0, ethereumjs-util@^5.0.1:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-5.2.1.tgz#a833f0e5fca7e5b361384dc76301a721f537bf65"
   integrity sha512-v3kT+7zdyCm1HIqWlLNrHGqHGLpGYIhjeHxQjnDXjLT2FyGJDsd3LWMYUo7pAFRrk86CR3nUJfhC81CCoJNNGQ==
@@ -2795,7 +2796,7 @@ ethereumjs-util@^5.0.0, ethereumjs-util@^5.0.1, ethereumjs-util@^5.1.1:
     rlp "^2.0.0"
     safe-buffer "^5.1.1"
 
-ethereumjs-util@^6.0.0:
+ethereumjs-util@^6.0.0, ethereumjs-util@^6.1.0:
   version "6.2.1"
   resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-6.2.1.tgz#fcb4e4dd5ceacb9d2305426ab1a5cd93e3163b69"
   integrity sha512-W2Ktez4L01Vexijrm5EB6w7dg4n/TgpoYU4avuT5T3Vmnw/eCRtiBrJfQYS/DCSvDIOLn2k57GcHdeBcgVxAqw==
@@ -4316,14 +4317,14 @@ merkle-patricia-tree@^2.1.2, merkle-patricia-tree@^2.3.2:
     rlp "^2.0.0"
     semaphore ">=1.0.1"
 
-merkle-tree-solidity@^1.0.8:
+merkle-tree-solidity@daonuts/merkle-tree-solidity#master:
   version "1.0.8"
-  resolved "https://registry.yarnpkg.com/merkle-tree-solidity/-/merkle-tree-solidity-1.0.8.tgz#c4dc7bdad03270ca16c72cadc8b0e616dfc3a77a"
-  integrity sha1-xNx72tAycMoWxyytyLDmFt/Dp3o=
+  uid d921f7079c8544985f6129abb905e545bedae954
+  resolved "https://codeload.github.com/daonuts/merkle-tree-solidity/tar.gz/d921f7079c8544985f6129abb905e545bedae954"
   dependencies:
     es6-promisify "^5.0.0"
     ether-pudding "^3.2.0"
-    ethereumjs-util "^5.1.1"
+    ethereumjs-util "^6.1.0"
     ethjs-contract "^0.1.7"
     ethjs-provider-http "^0.1.4"
     ethjs-query "^0.2.1"
@@ -7066,9 +7067,9 @@ xtend@~2.1.1:
     object-keys "~0.4.0"
 
 y18n@^3.2.0, y18n@^3.2.1:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
-  integrity sha1-bRX7qITAhnnA136I53WegR4H+kE=
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.2.tgz#85c901bd6470ce71fc4bb723ad209b70f7f28696"
+  integrity sha512-uGZHXkHnhF0XeeAPgnKfPv1bgKAYyVvmNL1xlKsPYZPaIHxGti2hHqvOCQv71XMsLxu1QjergkqogUnms5D3YQ==
 
 y18n@^4.0.0:
   version "4.0.0"