diff --git a/package-lock.json b/package-lock.json
index 42db9ef..2170d4d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -412,9 +412,9 @@
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@@ -1636,16 +1638,6 @@
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@@ -1657,13 +1649,24 @@
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@@ -1797,7 +1800,7 @@
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@@ -2993,14 +2996,14 @@
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-        "lcid": "1.0.0",
-        "mem": "1.1.0"
+        "execa": "^0.10.0",
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@@ -3009,12 +3012,24 @@
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@@ -3717,12 +3726,12 @@
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-        "strip-ansi": "3.0.1"
+        "string-width": "^1.0.1",
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@@ -3731,7 +3740,7 @@
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-            "number-is-nan": "1.0.1"
+            "number-is-nan": "^1.0.0"
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@@ -3740,9 +3749,9 @@
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-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
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@@ -3751,7 +3760,7 @@
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           "dev": true,
           "requires": {
-            "ansi-regex": "2.1.1"
+            "ansi-regex": "^2.0.0"
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@@ -3783,30 +3792,24 @@
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-        "which-module": "2.0.0",
-        "y18n": "4.0.0",
-        "yargs-parser": "10.1.0"
+      "version": "12.0.2",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.2.tgz",
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+      "dev": true,
+      "requires": {
+        "cliui": "^4.0.0",
+        "decamelize": "^2.0.0",
+        "find-up": "^3.0.0",
+        "get-caller-file": "^1.0.1",
+        "os-locale": "^3.0.0",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^1.0.1",
+        "set-blocking": "^2.0.0",
+        "string-width": "^2.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^3.2.1 || ^4.0.0",
+        "yargs-parser": "^10.1.0"
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@@ -3815,7 +3818,7 @@
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           "dev": true,
           "requires": {
-            "locate-path": "3.0.0"
+            "locate-path": "^3.0.0"
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@@ -3824,8 +3827,8 @@
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           "dev": true,
           "requires": {
-            "p-locate": "3.0.0",
-            "path-exists": "3.0.0"
+            "p-locate": "^3.0.0",
+            "path-exists": "^3.0.0"
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@@ -3834,7 +3837,7 @@
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           "dev": true,
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-            "p-try": "2.0.0"
+            "p-try": "^2.0.0"
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@@ -3843,7 +3846,7 @@
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           "dev": true,
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-            "p-limit": "2.0.0"
+            "p-limit": "^2.0.0"
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@@ -3866,7 +3869,7 @@
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       "dev": true,
       "requires": {
-        "camelcase": "4.1.0"
+        "camelcase": "^4.1.0"
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diff --git a/package.json b/package.json
index 7f20db9..96aea05 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "nyc": "^13.0.1",
     "prettier": "^1.14.2",
     "unexpected": "^10.39.0",
-    "yargs": "^12.0.1"
+    "yargs": "^12.0.2"
   },
   "nyc": {
     "cache": true,