diff --git a/package-lock.json b/package-lock.json
index d5456d7..7419ca6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -545,6 +545,7 @@
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       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
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+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
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+      "dev": true,
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@@ -2890,6 +2893,7 @@
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@@ -3002,6 +3006,7 @@
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@@ -3188,12 +3193,14 @@
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+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
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@@ -3665,6 +3673,7 @@
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-      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA="
+      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
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+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
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@@ -3998,6 +4008,11 @@
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+      "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz",
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+      "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=",
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       "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
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@@ -6519,6 +6548,7 @@
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-      "integrity": "sha1-5md4PZLonb00KBi1IwudYqZyrRg="
+      "integrity": "sha1-5md4PZLonb00KBi1IwudYqZyrRg=",
+      "dev": true
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+      "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
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+      "integrity": "sha1-sH/y2aXYi+yAYDWJWiurZqJ5iLw=",
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-      "integrity": "sha1-zg6+ql94yxiSXqfYENe1mwEP1RU="
+      "integrity": "sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=",
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-      "integrity": "sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A="
+      "integrity": "sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=",
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-      "integrity": "sha1-8FKijacOYYkX7wqKw0wa5aaChrM="
+      "integrity": "sha1-8FKijacOYYkX7wqKw0wa5aaChrM=",
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+      "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
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@@ -8065,7 +8106,8 @@
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@@ -8108,7 +8150,8 @@
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@@ -8236,7 +8280,8 @@
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@@ -8248,6 +8293,7 @@
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@@ -8270,12 +8316,14 @@
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               "version": "0.0.8",
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+              "optional": true
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               "version": "2.2.4",
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+              "optional": true,
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@@ -8294,6 +8342,7 @@
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@@ -8374,7 +8423,8 @@
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@@ -8386,6 +8436,7 @@
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@@ -8471,7 +8522,8 @@
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@@ -8507,6 +8559,7 @@
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@@ -8526,6 +8579,7 @@
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@@ -8569,12 +8623,14 @@
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-      "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc="
+      "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc=",
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       "integrity": "sha1-RKrGW2lbAzmJaMOfNj/uXer98eo=",
+      "dev": true,
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@@ -8857,7 +8915,8 @@
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-      "integrity": "sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM="
+      "integrity": "sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=",
+      "dev": true
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-      "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0="
+      "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
+      "dev": true
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@@ -9098,7 +9158,8 @@
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-      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw="
+      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
+      "dev": true
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diff --git a/package.json b/package.json
index 09ac4f1..5a39b76 100644
--- a/package.json
+++ b/package.json
@@ -42,6 +42,6 @@
   "dependencies": {
     "babel-runtime": "^6.26.0",
     "source-map-support": "^0.4.18",
-    "yenv": "^2.1.0"
+    "yenv": "^3.0.0"
   }
 }