diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 0000000..040cd08
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,3 @@
+module.exports = {
+  extends: 'kswedberg/es5',
+};
diff --git a/.jshintrc b/.jshintrc
deleted file mode 100644
index f57a8ff..0000000
--- a/.jshintrc
+++ /dev/null
@@ -1,13 +0,0 @@
-{
-  "curly": true,
-  "eqeqeq": true,
-  "immed": true,
-  "latedef": true,
-  "newcap": true,
-  "noarg": true,
-  "sub": true,
-  "undef": true,
-  "boss": true,
-  "eqnull": true,
-  "node": true
-}
diff --git a/Gruntfile.js b/Gruntfile.js
index c164196..7d17b84 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -16,17 +16,14 @@ module.exports = function(grunt) {
   // Project configuration.
   var gruntConfig = {
     pkg: grunt.file.readJSON('package.json'),
-    jshint: {
+    eslint: {
       all: [
         'Gruntfile.js',
         'tasks/*.js',
         '<%= nodeunit.tests %>',
       ],
-      options: {
-        jshintrc: '.jshintrc',
-      },
-    },
 
+    },
     // Before generating any new files, remove any previously-created files.
     clean: {
       tests: ['tmp'],
@@ -38,33 +35,33 @@ module.exports = function(grunt) {
           src: ['**'],
           dest: 'tmp/',
           filter: 'isFile',
-          expand: true
-        }]
-      }
+          expand: true,
+        }],
+      },
     },
 
     version: {
       options: {
-        pkg: grunt.file.readJSON('test/fixtures/test-package.json')
+        pkg: grunt.file.readJSON('test/fixtures/test-package.json'),
       },
       // Not for testing. Run with grunt version:v:[release]
       v: {
         options: {
-          pkg: 'package.json'
+          pkg: 'package.json',
         },
         src: [
-          'package.json'
-        ]
+          'package.json',
+        ],
       },
       allFiles: {
 
-      }
+      },
     },
 
     // Unit tests.
     nodeunit: {
       tests: ['test/version-test.js'],
-      allFiles: ['test/version-all-test.js']
+      allFiles: ['test/version-all-test.js'],
     },
 
   };
@@ -77,7 +74,8 @@ module.exports = function(grunt) {
   grunt.loadTasks('tasks');
 
   // These plugins provide necessary tasks.
-  grunt.loadNpmTasks('grunt-contrib-jshint');
+  // grunt.loadNpmTasks('grunt-contrib-jshint');
+  grunt.loadNpmTasks('grunt-eslint');
   grunt.loadNpmTasks('grunt-contrib-clean');
   grunt.loadNpmTasks('grunt-contrib-nodeunit');
   grunt.loadNpmTasks('grunt-contrib-copy');
@@ -87,7 +85,7 @@ module.exports = function(grunt) {
 
   var testTasks = [
     'clean',
-    'copy'
+    'copy',
   ];
   var testTarget;
 
@@ -106,7 +104,7 @@ module.exports = function(grunt) {
       'clean',
       'copy',
       'version::minor',
-      'nodeunit:allFiles'
+      'nodeunit:allFiles',
     ];
 
     grunt.config.set('version', versionConfig);
@@ -119,6 +117,6 @@ module.exports = function(grunt) {
   grunt.registerTask('test', testTasks);
 
   // By default, lint and run all tests.
-  grunt.registerTask('default', ['jshint', 'test']);
+  grunt.registerTask('default', ['eslint', 'test']);
 
 };
diff --git a/package-lock.json b/package-lock.json
index c8ee7e0..ec045f6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "grunt-version",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -14,12 +14,12 @@
       }
     },
     "@babel/generator": {
-      "version": "7.4.4",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.4.4.tgz",
-      "integrity": "sha512-53UOLK6TVNqKxf7RUh8NE851EHRxOOeVXKbK2bivdb+iziMyk03Sr4eaE9OELCbyZAAafAKPDwF2TPUES5QbxQ==",
+      "version": "7.5.0",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.5.0.tgz",
+      "integrity": "sha512-1TTVrt7J9rcG5PMjvO7VEG3FrEoEJNHxumRq66GemPmzboLWtIjjcJgk8rokuAS7IiRSpgVSu5Vb9lc99iJkOA==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.4.4",
+        "@babel/types": "^7.5.0",
         "jsesc": "^2.5.1",
         "lodash": "^4.17.11",
         "source-map": "^0.5.0",
@@ -56,9 +56,9 @@
       }
     },
     "@babel/highlight": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz",
-      "integrity": "sha512-UFMC4ZeFC48Tpvj7C8UgLvtkaUuovQX+5xNWrsIoMG8o2z+XFKjKaN9iVmS84dPwVN00W4wPmqvYoZF3EGAsfw==",
+      "version": "7.5.0",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.5.0.tgz",
+      "integrity": "sha512-7dV4eu9gBxoM0dAnj/BCFDW9LFU0zvTrkq0ugM7pnHEgguOEeOz1so2ZghEdzviYzQEED0r4EAgpsBChKy1TRQ==",
       "dev": true,
       "requires": {
         "chalk": "^2.0.0",
@@ -67,9 +67,9 @@
       }
     },
     "@babel/parser": {
-      "version": "7.4.5",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.4.5.tgz",
-      "integrity": "sha512-9mUqkL1FF5T7f0WDFfAoDdiMVPWsdD1gZYzSnaXsxUCUqzuch/8of9G3VUSNiZmMBoRxT3neyVsqeiL/ZPcjew==",
+      "version": "7.5.0",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.5.0.tgz",
+      "integrity": "sha512-I5nW8AhGpOXGCCNYGc+p7ExQIBxRFnS2fd/d862bNOKvmoEPjYPcfIjsfdy0ujagYOIYPczKgD9l3FsgTkAzKA==",
       "dev": true
     },
     "@babel/template": {
@@ -84,26 +84,26 @@
       }
     },
     "@babel/traverse": {
-      "version": "7.4.5",
-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.4.5.tgz",
-      "integrity": "sha512-Vc+qjynwkjRmIFGxy0KYoPj4FdVDxLej89kMHFsWScq999uX+pwcX4v9mWRjW0KcAYTPAuVQl2LKP1wEVLsp+A==",
+      "version": "7.5.0",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.5.0.tgz",
+      "integrity": "sha512-SnA9aLbyOCcnnbQEGwdfBggnc142h/rbqqsXcaATj2hZcegCl903pUD/lfpsNBlBSuWow/YDfRyJuWi2EPR5cg==",
       "dev": true,
       "requires": {
         "@babel/code-frame": "^7.0.0",
-        "@babel/generator": "^7.4.4",
+        "@babel/generator": "^7.5.0",
         "@babel/helper-function-name": "^7.1.0",
         "@babel/helper-split-export-declaration": "^7.4.4",
-        "@babel/parser": "^7.4.5",
-        "@babel/types": "^7.4.4",
+        "@babel/parser": "^7.5.0",
+        "@babel/types": "^7.5.0",
         "debug": "^4.1.0",
         "globals": "^11.1.0",
         "lodash": "^4.17.11"
       }
     },
     "@babel/types": {
-      "version": "7.4.4",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.4.4.tgz",
-      "integrity": "sha512-dOllgYdnEFOebhkKCjzSVFqw/PmmB8pH6RGOWkY4GsboQNd47b1fBThBSwlHAq9alF9vc1M3+6oqR47R50L0tQ==",
+      "version": "7.5.0",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.5.0.tgz",
+      "integrity": "sha512-UFpDVqRABKsW01bvw7/wSUe56uy6RXM5+VJibVVAybDGxEW25jdwiFJEf7ASvSaC7sN7rbE/l3cLp2izav+CtQ==",
       "dev": true,
       "requires": {
         "esutils": "^2.0.2",
@@ -116,10 +116,22 @@
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
       "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q=="
     },
+    "acorn": {
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
+      "integrity": "sha512-8oe72N3WPMjA+2zVG71Ia0nXZ8DpQH+QyyHO+p06jT8eg8FGG3FbcUIi8KziHlAfheJQZeoqbvq1mQSQHXKYLw==",
+      "dev": true
+    },
+    "acorn-jsx": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.0.1.tgz",
+      "integrity": "sha512-HJ7CfNHrfJLlNTzIEUTj43LNWGkqpRLxm3YjAlcD0ACydk9XynzYsCBHxut+iqt+1aBXkx9UP/w/ZqMr13XIzg==",
+      "dev": true
+    },
     "ajv": {
-      "version": "6.10.0",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.0.tgz",
-      "integrity": "sha512-nffhOpkymDECQyR0mnsUtoCE8RlX38G0rYP+wgLWFyZuUyuuojSSvi/+euOiQBIn63whYwYVIIH1TvE3tu4OEg==",
+      "version": "6.10.1",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.1.tgz",
+      "integrity": "sha512-w1YQaVGNC6t2UCPjEawK/vo/dG8OOrVtUmhBT1uJJYxbl5kU2Tj3v6LGqBcsysN1yhuCStJCCA3GqdvKY8sqXQ==",
       "dev": true,
       "requires": {
         "fast-deep-equal": "^2.0.1",
@@ -128,6 +140,12 @@
         "uri-js": "^4.2.2"
       }
     },
+    "ansi-escapes": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.2.0.tgz",
+      "integrity": "sha512-cBhpre4ma+U0T1oM5fXg7Dy1Jw7zzwv7lt/GoCpr+hDQJoYnKVPLL4dCvSEFMmQurOQvSrwT7SL/DAlhBI97RQ==",
+      "dev": true
+    },
     "ansi-regex": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
@@ -198,6 +216,12 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
       "dev": true
     },
+    "astral-regex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/astral-regex/-/astral-regex-1.0.0.tgz",
+      "integrity": "sha512-+Ryf6g3BKoRc7jfp7ad8tM4TtMiaWvbF/1/sQcZPkkS7ag3D5nMBCe2UfOTONtAkaG0tO0ij3C5Lwmf1EiyjHg==",
+      "dev": true
+    },
     "async": {
       "version": "1.5.2",
       "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
@@ -274,6 +298,12 @@
         "write-file-atomic": "^2.4.2"
       }
     },
+    "callsites": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
+      "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
+      "dev": true
+    },
     "camelcase": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-2.1.1.tgz",
@@ -310,38 +340,33 @@
         "supports-color": "^5.3.0"
       }
     },
+    "chardet": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/chardet/-/chardet-0.7.0.tgz",
+      "integrity": "sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==",
+      "dev": true
+    },
     "clean-yaml-object": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/clean-yaml-object/-/clean-yaml-object-0.1.0.tgz",
       "integrity": "sha1-Y/sRDcLOGoTcIfbZM0h20BCui2g=",
       "dev": true
     },
-    "cli": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/cli/-/cli-1.0.1.tgz",
-      "integrity": "sha1-IoF1NPJL+klQw01TLUjsvGIbjBQ=",
+    "cli-cursor": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-2.1.0.tgz",
+      "integrity": "sha1-s12sN2R5+sw+lHR9QdDQ9SOP/LU=",
       "dev": true,
       "requires": {
-        "exit": "0.1.2",
-        "glob": "^7.1.1"
-      },
-      "dependencies": {
-        "glob": {
-          "version": "7.1.4",
-          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.4.tgz",
-          "integrity": "sha512-hkLPepehmnKk41pUGm3sYxoFs/umurYfYJCerbXEyFIWcAzvpipAgVkBqqT9RBKMGjnq6kMuyYwha6csxbiM1A==",
-          "dev": true,
-          "requires": {
-            "fs.realpath": "^1.0.0",
-            "inflight": "^1.0.4",
-            "inherits": "2",
-            "minimatch": "^3.0.4",
-            "once": "^1.3.0",
-            "path-is-absolute": "^1.0.0"
-          }
-        }
+        "restore-cursor": "^2.0.0"
       }
     },
+    "cli-width": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.2.0.tgz",
+      "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=",
+      "dev": true
+    },
     "cliui": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
@@ -426,15 +451,6 @@
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
     },
-    "console-browserify": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/console-browserify/-/console-browserify-1.1.0.tgz",
-      "integrity": "sha1-8CQcRXMKn8YyOyBtvzjtx0HQuxA=",
-      "dev": true,
-      "requires": {
-        "date-now": "^0.1.4"
-      }
-    },
     "convert-source-map": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.6.0.tgz",
@@ -442,6 +458,14 @@
       "dev": true,
       "requires": {
         "safe-buffer": "~5.1.1"
+      },
+      "dependencies": {
+        "safe-buffer": {
+          "version": "5.1.2",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
+          "dev": true
+        }
       }
     },
     "core-util-is": {
@@ -512,12 +536,6 @@
         "assert-plus": "^1.0.0"
       }
     },
-    "date-now": {
-      "version": "0.1.4",
-      "resolved": "https://registry.npmjs.org/date-now/-/date-now-0.1.4.tgz",
-      "integrity": "sha1-6vQ5/U1ISK105cx9vvIAZyueNFs=",
-      "dev": true
-    },
     "dateformat": {
       "version": "1.0.12",
       "resolved": "https://registry.npmjs.org/dateformat/-/dateformat-1.0.12.tgz",
@@ -541,6 +559,12 @@
       "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
       "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA="
     },
+    "deep-is": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.3.tgz",
+      "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
+      "dev": true
+    },
     "default-require-extensions": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/default-require-extensions/-/default-require-extensions-2.0.0.tgz",
@@ -570,22 +594,13 @@
       "integrity": "sha1-fyjS657nsVqX79ic5j3P2qPMur8=",
       "dev": true
     },
-    "dom-serializer": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-0.1.1.tgz",
-      "integrity": "sha512-l0IU0pPzLWSHBcieZbpOKgkIn3ts3vAh7ZuFyXNwJxJXk/c4Gwj9xaTJwIDVQCXawWD0qb3IzMGH5rglQaO0XA==",
+    "doctrine": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
+      "integrity": "sha512-yS+Q5i3hBf7GBkd4KG8a7eBNNWNGLTaEwwYWUijIYM7zrlYDM0BFXHjjPWlWZ1Rg7UaddZeIDmi9jF3HmqiQ2w==",
       "dev": true,
       "requires": {
-        "domelementtype": "^1.3.0",
-        "entities": "^1.1.1"
-      },
-      "dependencies": {
-        "entities": {
-          "version": "1.1.2",
-          "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.2.tgz",
-          "integrity": "sha512-f2LZMYl1Fzu7YSBKg+RoROelpOaNrcGmE9AZubeDfrCEia483oW4MI4VyFd5VNHIgQ/7qm1I0wUHK1eJnn2y2w==",
-          "dev": true
-        }
+        "esutils": "^2.0.2"
       }
     },
     "domain-browser": {
@@ -594,31 +609,6 @@
       "integrity": "sha512-jnjyiM6eRyZl2H+W8Q/zLMA481hzi0eszAaBUzIVnmYVDBbnLxVNnfu1HgEBvCbL+71FrxMl3E6lpKH7Ge3OXA==",
       "dev": true
     },
-    "domelementtype": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.3.1.tgz",
-      "integrity": "sha512-BSKB+TSpMpFI/HOxCNr1O8aMOTZ8hT3pM3GQ0w/mWRmkhEDSFJkkyzz4XQsBV44BChwGkrDfMyjVD0eA2aFV3w==",
-      "dev": true
-    },
-    "domhandler": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-2.3.0.tgz",
-      "integrity": "sha1-LeWaCCLVAn+r/28DLCsloqir5zg=",
-      "dev": true,
-      "requires": {
-        "domelementtype": "1"
-      }
-    },
-    "domutils": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/domutils/-/domutils-1.5.1.tgz",
-      "integrity": "sha1-3NhIiib1Y9YQeeSMn3t+Mjc2gs8=",
-      "dev": true,
-      "requires": {
-        "dom-serializer": "0",
-        "domelementtype": "1"
-      }
-    },
     "ecc-jsbn": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz",
@@ -630,9 +620,9 @@
       }
     },
     "ejs": {
-      "version": "2.6.1",
-      "resolved": "https://registry.npmjs.org/ejs/-/ejs-2.6.1.tgz",
-      "integrity": "sha512-0xy4A/twfrRCnkhfk8ErDi5DqdAsAqeGxht4xkCUrsvhhbQNs7E+4jV0CN7+NKIY0aHE72+XvqtBIXzD31ZbXQ==",
+      "version": "2.6.2",
+      "resolved": "https://registry.npmjs.org/ejs/-/ejs-2.6.2.tgz",
+      "integrity": "sha512-PcW2a0tyTuPHz3tWyYqtK6r1fZ3gp+3Sop8Ph+ZYN81Ob5rwmbHEzaqs10N3BEsaGTkh/ooniXK+WwszGlc2+Q==",
       "dev": true
     },
     "emoji-regex": {
@@ -650,12 +640,6 @@
         "once": "^1.4.0"
       }
     },
-    "entities": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/entities/-/entities-1.0.0.tgz",
-      "integrity": "sha1-sph6o4ITR/zeZCsk/fyeT7cSvyY=",
-      "dev": true
-    },
     "error-ex": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.2.tgz",
@@ -675,17 +659,166 @@
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
       "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
     },
+    "eslint": {
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+          "version": "5.1.2",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
+          "dev": true,
+          "optional": true
+        },
         "string_decoder": {
           "version": "1.1.1",
           "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -2668,12 +3074,33 @@
         }
       }
     },
+    "text-table": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
+      "integrity": "sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=",
+      "dev": true
+    },
+    "through": {
+      "version": "2.3.8",
+      "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
+      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
+      "dev": true
+    },
     "tmatch": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/tmatch/-/tmatch-4.0.0.tgz",
       "integrity": "sha512-Ynn2Gsp+oCvYScQXeV+cCs7citRDilq0qDXA6tuvFwDgiYyyaq7D5vKUlAPezzZR5NDobc/QMeN6e5guOYmvxg==",
       "dev": true
     },
+    "tmp": {
+      "version": "0.0.33",
+      "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz",
+      "integrity": "sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==",
+      "dev": true,
+      "requires": {
+        "os-tmpdir": "~1.0.2"
+      }
+    },
     "to-fast-properties": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
@@ -2716,9 +3143,9 @@
       "dev": true
     },
     "ts-node": {
-      "version": "8.2.0",
-      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-8.2.0.tgz",
-      "integrity": "sha512-m8XQwUurkbYqXrKqr3WHCW310utRNvV5OnRVeISeea7LoCWVcdfeB/Ntl8JYWFh+WRoUAdBgESrzKochQt7sMw==",
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-8.3.0.tgz",
+      "integrity": "sha512-dyNS/RqyVTDcmNM4NIBAeDMpsAdaQ+ojdf0GOLqE6nwJOgzEkdRNzJywhDfwnuvB10oa6NLVG1rUJQCpRN7qoQ==",
       "dev": true,
       "requires": {
         "arg": "^4.1.0",
@@ -2742,6 +3169,12 @@
       "integrity": "sha512-jxyxgKVKa4Bh5dPcO42TJL22lIvfd9LOVJwdovKOnJa4TLLrHxquK+DlGm4rkGmrcur+GRx+x4oW00O2pY/fFw==",
       "dev": true
     },
+    "tslib": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.10.0.tgz",
+      "integrity": "sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==",
+      "dev": true
+    },
     "tunnel-agent": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
@@ -2757,10 +3190,19 @@
       "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
       "dev": true
     },
+    "type-check": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
+      "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
+      "dev": true,
+      "requires": {
+        "prelude-ls": "~1.1.2"
+      }
+    },
     "typescript": {
-      "version": "3.5.1",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.1.tgz",
-      "integrity": "sha512-64HkdiRv1yYZsSe4xC1WVgamNigVYjlssIoaH2HcZF0+ijsk5YK2g0G34w9wJkze8+5ow4STd22AynfO6ZYYLw==",
+      "version": "3.5.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
+      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
       "dev": true
     },
     "uglify-js": {
@@ -2903,6 +3345,15 @@
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
+    "write": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/write/-/write-1.0.3.tgz",
+      "integrity": "sha512-/lg70HAjtkUgWPVZhZcm+T4hkL8Zbtp1nFNOn3lRrxnlv50SRBv7cR7RqR+GMsd3hUXy9hWBo4CHTbFTcOYwig==",
+      "dev": true,
+      "requires": {
+        "mkdirp": "^0.5.1"
+      }
+    },
     "write-file-atomic": {
       "version": "2.4.3",
       "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.3.tgz",
diff --git a/package.json b/package.json
index 3fea881..52ae72a 100644
--- a/package.json
+++ b/package.json
@@ -33,10 +33,11 @@
     "semver": "^6.1.1"
   },
   "devDependencies": {
+    "eslint-config-kswedberg": "^3.1.1",
     "grunt-contrib-clean": "^2.0.0",
     "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-jshint": "^2.1.0",
-    "grunt-contrib-nodeunit": "^2.0.0"
+    "grunt-contrib-nodeunit": "^2.0.0",
+    "grunt-eslint": "^22.0.0"
   },
   "keywords": [
     "gruntplugin",
diff --git a/tasks/version.js b/tasks/version.js
index c028852..04ccdf0 100644
--- a/tasks/version.js
+++ b/tasks/version.js
@@ -21,7 +21,7 @@ module.exports = function(grunt) {
       // If pkg is the same string as previous target, and we're looping through targets,
       // make sure we're sticking with previous version so we don't keep incrementing subsequent targets
       if (typeof pkg === 'string') {
-        if ( pkgs[i] && pkg === pkgs[i].pkg && /^version::/.test(process.argv[2]) ) {
+        if (pkgs[i] && pkg === pkgs[i].pkg && /^version::/.test(process.argv[2])) {
           pkg = pkgs[i];
         } else {
           pkg = grunt.file.readJSON(pkg, {encoding: opts.encoding});
@@ -31,7 +31,7 @@ module.exports = function(grunt) {
       pkgs.push({
         // Store the pre-modified pkg, but the modified version
         pkg: opts.pkg,
-        version: pkg.version
+        version: pkg.version,
       });
 
       return pkg.version;
@@ -55,26 +55,27 @@ module.exports = function(grunt) {
 
     var log = function log(type, info) {
       var msgs = {
-        notFound: [ 'Pattern not found in file', 'Pattern: ' + info.pattern ],
-        skipped: [ 'File skipped.',  'Current version and new version are equal: ' + info.version ],
+        notFound: ['Pattern not found in file', 'Pattern: ' + info.pattern],
+        skipped: ['File skipped.', 'Current version and new version are equal: ' + info.version],
         updated: [
           'File updated.',
-          'Old version: ' + info.fileVersion + '. New version: ' + info.version + '.'
-        ]
+          'Old version: ' + info.fileVersion + '. New version: ' + info.version + '.',
+        ],
       };
-      grunt.log.subhead( msgs[type][0] );
+
+      grunt.log.subhead(msgs[type][0]);
       grunt.log.writeln('Path: ' + info.filePath);
-      grunt.log.writeln( msgs[type][1] );
+      grunt.log.writeln(msgs[type][1]);
     };
 
-    var newVersion,
-        version = getVersion(options),
-        release = this.args && this.args[0] || options.release,
-        semver = require('semver'),
-        bump = /major|minor|patch|prerelease/.test(release),
-        literal = semver.valid(release);
+    var newVersion;
+    var version = getVersion(options);
+    var release = this.args && this.args[0] || options.release;
+    var semver = require('semver');
+    var bump = /major|minor|patch|prerelease/.test(release);
+    var literal = semver.valid(release);
 
-    if ( bump && semver.valid(version) ) {
+    if (bump && semver.valid(version)) {
       if (typeof options.prereleaseIdentifier !== 'undefined') {
         newVersion = semver.inc(version, release, options.prereleaseIdentifier);
       } else {
@@ -92,6 +93,7 @@ module.exports = function(grunt) {
       // Warn if a source file/pattern was invalid.
       if (!grunt.file.exists(filepath)) {
         grunt.log.error('Source file "' + filepath + '" not found.');
+
         return '';
       }
 
@@ -100,11 +102,11 @@ module.exports = function(grunt) {
         file: grunt.file.read(filepath, fileOptions),
         filePath: filepath,
         version: version,
-        pattern: new RegExp('(' + options.prefix + ')(' + options.replace + ')', options.flags)
+        pattern: new RegExp('(' + options.prefix + ')(' + options.replace + ')', options.flags),
       };
 
-      var newfile,
-          matches = fileInfo.pattern.exec(fileInfo.file);
+      var newfile;
+      var matches = fileInfo.pattern.exec(fileInfo.file);
 
       if (!matches) {
         log('notFound', fileInfo);
diff --git a/test/version-test.js b/test/version-test.js
index 695420d..762c195 100644
--- a/test/version-test.js
+++ b/test/version-test.js
@@ -1,6 +1,6 @@
 'use strict';
-var semver = require('semver');
 
+var semver = require('semver');
 var grunt = require('grunt');
 
 /*
@@ -29,11 +29,13 @@ exports.version = {
   },
   prefixOption: function(test) {
     var files = grunt.config('version.prefixOption.src');
+
     test.expect(files.length);
 
     files.forEach(function(file) {
       var content = grunt.file.read(file);
       var actual = /version['"]?\s*[:=] ['"](\d\.\d\.\d)/.exec(content);
+
       actual = actual && actual[1];
 
       test.equal(actual, '0.1.0', 'Updates the file with version.');
@@ -42,11 +44,13 @@ exports.version = {
   },
   patch: function(test) {
     var files = grunt.config('version.patch.src');
+
     test.expect(files.length);
 
     files.forEach(function(file) {
       var content = grunt.file.read(file);
       var actual = /version['"]?\s*[:=] ['"](\d\.\d\.\d)/.exec(content);
+
       actual = actual && actual[1];
 
       test.equal(actual, '0.1.1', 'Increments the version and updates the file.');
@@ -58,7 +62,8 @@ exports.version = {
 
     var file = grunt.config('version.prerelease.src');
     var content = grunt.file.read(file);
-    var actual = /version['"]?\s*[:=] ['"](\d\.\d\.\d[\-\+a-zA-Z0-9\.]*)/.exec(content);
+    var actual = /version['"]?\s*[:=] ['"](\d\.\d\.\d[-+a-zA-Z0-9.]*)/.exec(content);
+
     actual = actual && actual[1];
 
     test.expect(1);
@@ -68,11 +73,13 @@ exports.version = {
   },
   minor: function(test) {
     var files = grunt.config('version.minor.src');
+
     test.expect(files.length);
 
     files.forEach(function(file) {
       var content = grunt.file.read(file);
       var actual = /version['"]?\s*[:=] ['"](\d\.\d\.\d)/.exec(content);
+
       actual = actual && actual[1];
 
       test.equal(actual, '1.3.0', 'Increments the minor version and updates the file.');
@@ -83,6 +90,7 @@ exports.version = {
   minorwitharg: function(test) {
     test.expect(1);
     var pkg = grunt.file.readJSON('tmp/test-pkg-arg.json');
+
     test.equal(pkg.version, '1.3.0', 'Increments the minor version and updates the file.');
     test.done();
   },
@@ -90,16 +98,17 @@ exports.version = {
     test.expect(4);
     var patchedFiles = [
       'tmp/exclude-some/123.js',
-      'tmp/exclude-some/testing.js'
+      'tmp/exclude-some/testing.js',
     ];
     var excludedFiles = [
       'tmp/exclude-some/no-123.js',
-      'tmp/exclude-some/no-testing.js'
+      'tmp/exclude-some/no-testing.js',
     ];
 
     patchedFiles.forEach(function(file) {
       var content = grunt.file.read(file);
       var actual = /version['"]?\s*[:=] ['"]([^'"]+)/.exec(content);
+
       actual = actual && actual[1];
 
       test.equal(actual, '1.2.4', 'Increments the version and updates the file.');
@@ -108,6 +117,7 @@ exports.version = {
     excludedFiles.forEach(function(file) {
       var content = grunt.file.read(file);
       var actual = /version['"]?\s*[:=] ['"]([^'"]+)/.exec(content);
+
       actual = actual && actual[1];
 
       test.equal(actual, '1.2.3', 'Ignores the file; version remains the same.');
@@ -125,11 +135,13 @@ exports.version = {
   },
   prereleaseBuild: function(test) {
     var files = grunt.config('version.prereleaseBuild.src');
+
     test.expect(files.length);
 
     files.forEach(function(file) {
       var content = grunt.file.read(file);
       var actual = /version['"]?\s*[:=] ['"]([^'"]+)/.exec(content);
+
       actual = actual && actual[1];
 
       test.equal(actual, '1.0.0-beta.2', 'Increments the version and updates the file.');
@@ -141,11 +153,12 @@ exports.version = {
     var file = grunt.config('version.flags.src');
     var content = grunt.file.read(file);
     var actual = /vErSIoN = '(\d\.\d\.\d)/.exec(content);
+
     actual = actual && actual[1];
 
     test.expect(1);
     test.equal(actual, '1.2.4', 'Case insensitive version update and updates the file');
 
     test.done();
-  }
+  },
 };