diff --git a/package-lock.json b/package-lock.json
index 1134bba..c91fe91 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -98,6 +98,12 @@
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@@ -122,6 +128,15 @@
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+      "resolved": "https://registry.npmjs.org/cache-base/-/cache-base-1.0.1.tgz",
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+      "requires": {
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+        "component-emitter": "^1.2.1",
+        "get-value": "^2.0.6",
+        "has-value": "^1.0.0",
+        "isobject": "^3.0.1",
+        "set-value": "^2.0.0",
+        "to-object-path": "^0.3.0",
+        "union-value": "^1.0.0",
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@@ -1212,6 +1337,35 @@
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@@ -1253,6 +1407,31 @@
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+      "integrity": "sha1-S8A3PBZLwykbTTaMgpzxqApZ3KA=",
+      "dev": true,
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+      "dev": true,
+      "requires": {
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@@ -1557,6 +1748,59 @@
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+      "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
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@@ -2388,6 +2644,15 @@
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diff --git a/package.json b/package.json
index 3800588..235c5e9 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
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     "ethereumjs-wallet": "0.6.2",
     "ganache-core": "2.2.1",
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     "truffle-contract": "3.0.6",
     "web3": "0.20.6"
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