diff --git a/package-lock.json b/package-lock.json
index e57b057..50a662b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2489,10 +2489,21 @@
       }
     },
     "eslint-utils": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/eslint-utils/-/eslint-utils-1.3.1.tgz",
-      "integrity": "sha512-Z7YjnIldX+2XMcjr7ZkgEsOj/bREONV60qYeB/bjMAqqqZ4zxKyWX+BOUkdmRmA9riiIPVvo5x86m5elviOk0Q==",
-      "dev": true
+      "version": "1.4.3",
+      "resolved": "https://registry.npmjs.org/eslint-utils/-/eslint-utils-1.4.3.tgz",
+      "integrity": "sha512-fbBN5W2xdY45KulGXmLHZ3c3FHfVYmKg0IrAKGOkT/464PQsx2UeIzfz1RmEci+KLm1bBaAzZAh8+/E+XAeZ8Q==",
+      "dev": true,
+      "requires": {
+        "eslint-visitor-keys": "^1.1.0"
+      },
+      "dependencies": {
+        "eslint-visitor-keys": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-1.1.0.tgz",
+          "integrity": "sha512-8y9YjtM1JBJU/A9Kc+SbaOV4y29sSWckBwMHa+FGtVj5gN/sbnKDf6xJUl+8g7FAij9LVaP8C24DUiH/f/2Z9A==",
+          "dev": true
+        }
+      }
     },
     "eslint-visitor-keys": {
       "version": "1.0.0",
@@ -2680,6 +2691,34 @@
       "requires": {
         "ethereumjs-abi": "git+https://github.com/ethereumjs/ethereumjs-abi.git#8431eab7b3384e65e8126a4602520b78031666fb",
         "ethereumjs-util": "^5.1.1"
+      },
+      "dependencies": {
+        "ethereumjs-abi": {
+          "version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#8431eab7b3384e65e8126a4602520b78031666fb",
+          "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+          "dev": true,
+          "requires": {
+            "bn.js": "^4.11.8",
+            "ethereumjs-util": "^6.0.0"
+          },
+          "dependencies": {
+            "ethereumjs-util": {
+              "version": "6.1.0",
+              "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-6.1.0.tgz",
+              "integrity": "sha512-URESKMFbDeJxnAxPppnk2fN6Y3BIatn9fwn76Lm8bQlt+s52TpG8dN9M66MLPuRAiAOIqL3dfwqWJf0sd0fL0Q==",
+              "dev": true,
+              "requires": {
+                "bn.js": "^4.11.0",
+                "create-hash": "^1.1.2",
+                "ethjs-util": "0.1.6",
+                "keccak": "^1.0.2",
+                "rlp": "^2.0.0",
+                "safe-buffer": "^5.1.1",
+                "secp256k1": "^3.0.1"
+              }
+            }
+          }
+        }
       }
     },
     "eth-tx-summary": {
@@ -2706,32 +2745,6 @@
       "integrity": "sha512-XOnAR/3rntJgbCdGhqdaLIxDLWKLmsZOGhHdBKadEr6gEnJLH52k93Ou+TUdFaPN3hJc3isBZBal3U/XZ15abA==",
       "dev": true
     },
-    "ethereumjs-abi": {
-      "version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#8431eab7b3384e65e8126a4602520b78031666fb",
-      "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
-      "dev": true,
-      "requires": {
-        "bn.js": "^4.11.8",
-        "ethereumjs-util": "^6.0.0"
-      },
-      "dependencies": {
-        "ethereumjs-util": {
-          "version": "6.1.0",
-          "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-6.1.0.tgz",
-          "integrity": "sha512-URESKMFbDeJxnAxPppnk2fN6Y3BIatn9fwn76Lm8bQlt+s52TpG8dN9M66MLPuRAiAOIqL3dfwqWJf0sd0fL0Q==",
-          "dev": true,
-          "requires": {
-            "bn.js": "^4.11.0",
-            "create-hash": "^1.1.2",
-            "ethjs-util": "0.1.6",
-            "keccak": "^1.0.2",
-            "rlp": "^2.0.0",
-            "safe-buffer": "^5.1.1",
-            "secp256k1": "^3.0.1"
-          }
-        }
-      }
-    },
     "ethereumjs-account": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/ethereumjs-account/-/ethereumjs-account-2.0.5.tgz",
@@ -8616,7 +8629,7 @@
         },
         "websocket": {
           "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
-          "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
+          "from": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
           "dev": true,
           "requires": {
             "debug": "^2.2.0",
diff --git a/yarn.lock b/yarn.lock
index e85c343..b6c3f9f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1849,14 +1849,16 @@ eslint-scope@^4.0.3:
     estraverse "^4.1.1"
 
 eslint-utils@^1.3.1:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/eslint-utils/-/eslint-utils-1.3.1.tgz#9a851ba89ee7c460346f97cf8939c7298827e512"
-  integrity sha512-Z7YjnIldX+2XMcjr7ZkgEsOj/bREONV60qYeB/bjMAqqqZ4zxKyWX+BOUkdmRmA9riiIPVvo5x86m5elviOk0Q==
+  version "1.4.3"
+  resolved "https://registry.yarnpkg.com/eslint-utils/-/eslint-utils-1.4.3.tgz#74fec7c54d0776b6f67e0251040b5806564e981f"
+  integrity sha512-fbBN5W2xdY45KulGXmLHZ3c3FHfVYmKg0IrAKGOkT/464PQsx2UeIzfz1RmEci+KLm1bBaAzZAh8+/E+XAeZ8Q==
+  dependencies:
+    eslint-visitor-keys "^1.1.0"
 
-eslint-visitor-keys@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
-  integrity sha512-qzm/XxIbxm/FHyH341ZrbnMUpe+5Bocte9xkmFMzPMjRaZMcXww+MpBptFvtU+79L362nqiLhekCxCxDPaUMBQ==
+eslint-visitor-keys@^1.0.0, eslint-visitor-keys@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.1.0.tgz#e2a82cea84ff246ad6fb57f9bde5b46621459ec2"
+  integrity sha512-8y9YjtM1JBJU/A9Kc+SbaOV4y29sSWckBwMHa+FGtVj5gN/sbnKDf6xJUl+8g7FAij9LVaP8C24DUiH/f/2Z9A==
 
 eslint@^5.6.0:
   version "5.16.0"
@@ -3961,6 +3963,11 @@ openzeppelin-eth@^2.0.2:
   resolved "https://registry.yarnpkg.com/openzeppelin-eth/-/openzeppelin-eth-2.1.3.tgz#d9a4d7830ca8e4c3bc44164179a661112655e8b2"
   integrity sha512-k1Yv3V7u369ERXV0xf+ru3TH+ZopFYY0E1M+4O32Q+0b4XLm2acVBaUvbuuqYMkUjKhSfu8HuPpXL7OWMEJWRw==
 
+openzeppelin-solidity@^2.2.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/openzeppelin-solidity/-/openzeppelin-solidity-2.3.0.tgz#1ab7b4cc3782a5472ed61eb740c56a8bfdd74119"
+  integrity sha512-QYeiPLvB1oSbDt6lDQvvpx7k8ODczvE474hb2kLXZBPKMsxKT1WxTCHBYrCU7kS7hfAku4DcJ0jqOyL+jvjwQw==
+
 openzeppelin-solidity@~1.10.0:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/openzeppelin-solidity/-/openzeppelin-solidity-1.10.0.tgz#d77eee6653f5958d051318a61ba0b436f92216c0"