diff --git a/package-lock.json b/package-lock.json
index 79aa7fa..93e212f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "fsm2dot",
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+  "version": "2.2.2",
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@@ -48,9 +48,17 @@
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-      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg="
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+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
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@@ -129,10 +137,18 @@
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-      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
+    "color-convert": {
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+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
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@@ -150,18 +166,6 @@
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@@ -185,13 +189,10 @@
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+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
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@@ -227,20 +228,6 @@
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@@ -260,17 +247,9 @@
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-      "requires": {
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+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-2.0.5.tgz",
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@@ -280,11 +259,6 @@
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@@ -309,7 +283,7 @@
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-      "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8="
+      "integrity": "sha512-VHskAKYM8RfSFXwee5t5cbN5PZeq1Wrh6qd5bkyiXIf6UQcN6w/A0eXM9r6t8d+GYOh+o6ZhiEnb88LN/Y8m2w=="
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@@ -324,16 +298,6 @@
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@@ -361,14 +325,6 @@
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@@ -397,65 +353,16 @@
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@@ -702,61 +570,34 @@
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       "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
@@ -847,92 +680,53 @@
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-      "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
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-        "strip-ansi": "^3.0.1"
-      },
-      "dependencies": {
-        "ansi-regex": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
-        },
-        "is-fullwidth-code-point": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
-          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
-          "requires": {
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-          }
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-        "string-width": {
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-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
-          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
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-            "strip-ansi": "^3.0.0"
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-        "strip-ansi": {
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-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
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-          "requires": {
-            "ansi-regex": "^2.0.0"
-          }
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+        "ansi-styles": "^3.2.0",
+        "string-width": "^3.0.0",
+        "strip-ansi": "^5.0.0"
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-    "wrappy": {
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-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
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     "yargs": {
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-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
-      "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
+      "version": "13.3.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.0.tgz",
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       "requires": {
-        "cliui": "^4.0.0",
-        "decamelize": "^1.2.0",
+        "cliui": "^5.0.0",
         "find-up": "^3.0.0",
-        "get-caller-file": "^1.0.1",
-        "os-locale": "^3.0.0",
+        "get-caller-file": "^2.0.1",
         "require-directory": "^2.1.1",
-        "require-main-filename": "^1.0.1",
+        "require-main-filename": "^2.0.0",
         "set-blocking": "^2.0.0",
-        "string-width": "^2.0.0",
+        "string-width": "^3.0.0",
         "which-module": "^2.0.0",
-        "y18n": "^3.2.1 || ^4.0.0",
-        "yargs-parser": "^11.1.1"
+        "y18n": "^4.0.0",
+        "yargs-parser": "^13.1.1"
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       "dependencies": {
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-          "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
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+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
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           "requires": {
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-            "strip-ansi": "^4.0.0",
-            "wrap-ansi": "^2.0.0"
+            "string-width": "^3.1.0",
+            "strip-ansi": "^5.2.0",
+            "wrap-ansi": "^5.1.0"
           }
         }
       }
     },
     "yargs-parser": {
-      "version": "11.1.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
-      "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
+      "version": "13.1.2",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
+      "integrity": "sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==",
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diff --git a/package.json b/package.json
index 36b95b2..c599035 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "estraverse": "^4.2.0",
     "lodash": "^4.17.2",
     "pug": "^2.0.0-rc.4",
-    "yargs": "^12.0.2"
+    "yargs": "^13.3.0"
   },
   "preferGlobal": true,
   "bin": {