diff --git a/CHANGELOG.md b/CHANGELOG.md
index 59fd4c0..1790aec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ This projects adheres to [Semantic Versioning](http://semver.org/) and [Keep a C
 ## [Unreleased][unreleased]
 -
 
+## [1.2.1] - 2019-03-27
+- Added `get_minor_units` method based on decimals of currency.
+- Updated copyright to 2005-2019 Pronamic.
+
 ## [1.2.0] - 2018-12-10
 - Added a `get_cents` method.
 - Introduced a TaxedMoney class.
diff --git a/composer.json b/composer.json
index 8a9b82c..09aa68b 100644
--- a/composer.json
+++ b/composer.json
@@ -31,11 +31,11 @@
 		"phpcompatibility/phpcompatibility-wp": "^2.0",
 		"phpmd/phpmd": "^2.4",
 		"phpunit/phpunit": "^4.8",
-		"roots/wordpress": "^5.0",
+		"roots/wordpress": "^5.1",
 		"squizlabs/php_codesniffer": "^2.9",
 		"vlucas/phpdotenv": "^2.0",
 		"wp-coding-standards/wpcs": "^1.2",
-		"wp-phpunit/wp-phpunit": "^5.0"
+		"wp-phpunit/wp-phpunit": "^5.1"
 	},
 	"scripts": {
 		"coveralls": "vendor/bin/coveralls -v",
diff --git a/composer.lock b/composer.lock
index ba56257..d67e9ac 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "404fcfe28be1e7061904e754d4a59f43",
+    "content-hash": "1c6d5b86a0c239671fbd370bc3b6f2f4",
     "packages": [],
     "packages-dev": [
         {
@@ -225,10 +225,10 @@
         },
         {
             "name": "koodimonni-language/de_de",
-            "version": "5.1",
+            "version": "5.1.1",
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/translation/core/5.1/de_DE.zip"
+                "url": "https://downloads.wordpress.org/translation/core/5.1.1/de_DE.zip"
             },
             "require": {
                 "koodimonni-plugin-language/akismet-de_de": "*",
@@ -256,10 +256,10 @@
         },
         {
             "name": "koodimonni-language/fr_fr",
-            "version": "5.1",
+            "version": "5.1.1",
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/translation/core/5.1/fr_FR.zip"
+                "url": "https://downloads.wordpress.org/translation/core/5.1.1/fr_FR.zip"
             },
             "require": {
                 "koodimonni-plugin-language/akismet-fr_fr": "*",
@@ -287,10 +287,10 @@
         },
         {
             "name": "koodimonni-language/nl_nl",
-            "version": "5.1",
+            "version": "5.1.1",
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/translation/core/5.1/nl_NL.zip"
+                "url": "https://downloads.wordpress.org/translation/core/5.1.1/nl_NL.zip"
             },
             "require": {
                 "koodimonni-plugin-language/akismet-nl_nl": "*",
@@ -432,10 +432,10 @@
         },
         {
             "name": "koodimonni-plugin-language/woocommerce-de_de",
-            "version": "3.5.5",
+            "version": "3.5.7",
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/translation/plugin/woocommerce/3.5.5/de_DE.zip"
+                "url": "https://downloads.wordpress.org/translation/plugin/woocommerce/3.5.7/de_DE.zip"
             },
             "require": {
                 "koodimonni/composer-dropin-installer": ">=0.2.3"
@@ -451,10 +451,10 @@
         },
         {
             "name": "koodimonni-plugin-language/woocommerce-fr_fr",
-            "version": "3.5.5",
+            "version": "3.5.7",
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/translation/plugin/woocommerce/3.5.5/fr_FR.zip"
+                "url": "https://downloads.wordpress.org/translation/plugin/woocommerce/3.5.7/fr_FR.zip"
             },
             "require": {
                 "koodimonni/composer-dropin-installer": ">=0.2.3"
@@ -470,10 +470,10 @@
         },
         {
             "name": "koodimonni-plugin-language/woocommerce-nl_nl",
-            "version": "3.5.5",
+            "version": "3.5.7",
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/translation/plugin/woocommerce/3.5.5/nl_NL.zip"
+                "url": "https://downloads.wordpress.org/translation/plugin/woocommerce/3.5.7/nl_NL.zip"
             },
             "require": {
                 "koodimonni/composer-dropin-installer": ">=0.2.3"
@@ -546,10 +546,10 @@
         },
         {
             "name": "koodimonni-theme-language/twentyeleven-de_de",
-            "version": "3.1",
+            "version": "3.2",
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/translation/theme/twentyeleven/3.1/de_DE.zip"
+                "url": "https://downloads.wordpress.org/translation/theme/twentyeleven/3.2/de_DE.zip"
             },
             "require": {
                 "koodimonni/composer-dropin-installer": ">=0.2.3"
@@ -1795,6 +1795,7 @@
                 "mock",
                 "xunit"
             ],
+            "abandoned": true,
             "time": "2015-10-02T06:51:40+00:00"
         },
         {
@@ -1846,15 +1847,16 @@
         },
         {
             "name": "roots/wordpress",
-            "version": "5.1",
+            "version": "5.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/WordPress/WordPress.git",
-                "reference": "5.1"
+                "reference": "5.1.1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/WordPress/WordPress/zipball/5.1"
+                "url": "https://api.github.com/repos/WordPress/WordPress/zipball/5.1.1",
+                "reference": "5.1.1"
             },
             "require": {
                 "php": ">=5.3.2",
@@ -1868,17 +1870,17 @@
             "authors": [
                 {
                     "name": "WordPress Community",
-                    "homepage": "http://wordpress.org/about/"
+                    "homepage": "https://wordpress.org/about/"
                 }
             ],
             "description": "WordPress is web software you can use to create a beautiful website or blog.",
-            "homepage": "http://wordpress.org/",
+            "homepage": "https://wordpress.org/",
             "keywords": [
                 "blog",
                 "cms",
                 "wordpress"
             ],
-            "time": "2019-02-22T00:57:46+00:00"
+            "time": "2019-03-13T14:18:06+00:00"
         },
         {
             "name": "roots/wordpress-core-installer",
@@ -2856,7 +2858,7 @@
         },
         {
             "name": "wp-phpunit/wp-phpunit",
-            "version": "5.1.0",
+            "version": "5.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/wp-phpunit/wp-phpunit.git",
diff --git a/languages/pronamic-money-nl_NL.mo b/languages/pronamic-money-nl_NL.mo
index dd2e553..07ee6db 100644
Binary files a/languages/pronamic-money-nl_NL.mo and b/languages/pronamic-money-nl_NL.mo differ
diff --git a/languages/pronamic-money-nl_NL.po b/languages/pronamic-money-nl_NL.po
index d1d7c93..40c7311 100644
--- a/languages/pronamic-money-nl_NL.po
+++ b/languages/pronamic-money-nl_NL.po
@@ -3,9 +3,9 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: Pronamic Money 1.0.0\n"
-"Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/pronamic-money\n"
-"POT-Creation-Date: 2018-08-16 09:55:50+00:00\n"
-"PO-Revision-Date: 2018-08-16 11:56+0100\n"
+"Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/wp-money\n"
+"POT-Creation-Date: 2019-03-27 15:35:10+00:00\n"
+"PO-Revision-Date: 2019-03-27 16:35+0100\n"
 "Last-Translator: Remco Tolsma <info@remcotolsma.nl>\n"
 "Language-Team: Pronamic <info@pronamic.eu>\n"
 "Language: nl_NL\n"
@@ -36,8 +36,8 @@ msgstr "Pronamic"
 msgid "https://www.pronamic.eu/"
 msgstr "https://www.pronamic.nl/"
 
-#. translators: 1: currency symbol, 2: amount, 3: currency code, note: use
-#. non-breaking space!
+#. translators: 1: currency symbol, 2: amount value, 3: currency code, note:
+#. use non-breaking space!
 #: src/Money.php:53
 msgctxt "money format"
 msgid "%1$s%2$s %3$s"
diff --git a/languages/pronamic-money.pot b/languages/pronamic-money.pot
index 6e9a8d0..3923363 100644
--- a/languages/pronamic-money.pot
+++ b/languages/pronamic-money.pot
@@ -1,17 +1,17 @@
-# Copyright (C) 2018 Pronamic
+# Copyright (C) 2019 Pronamic
 # This file is distributed under the GPL-3.0-or-later.
 msgid ""
 msgstr ""
-"Project-Id-Version: Pronamic Money 1.1.0\n"
-"Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/pronamic-money\n"
-"POT-Creation-Date: 2018-08-16 09:55:50+00:00\n"
+"Project-Id-Version: Pronamic Money 1.2.1\n"
+"Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/wp-money\n"
+"POT-Creation-Date: 2019-03-27 15:35:10+00:00\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"PO-Revision-Date: 2018-MO-DA HO:MI+ZONE\n"
+"PO-Revision-Date: 2019-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
-"X-Generator: grunt-wp-i18n1.0.2\n"
+"X-Generator: grunt-wp-i18n 1.0.3\n"
 
 #. Plugin Name of the plugin/theme
 msgid "Pronamic Money"
@@ -34,8 +34,8 @@ msgid "https://www.pronamic.eu/"
 msgstr ""
 
 #: src/Money.php:53
-#. translators: 1: currency symbol, 2: amount, 3: currency code, note: use
-#. non-breaking space!
+#. translators: 1: currency symbol, 2: amount value, 3: currency code, note:
+#. use non-breaking space!
 msgctxt "money format"
 msgid "%1$s%2$s %3$s"
 msgstr ""
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index e8a5b1d..ffb48e8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
 	"name": "wp-money",
-	"version": "1.2.0",
+	"version": "1.2.1",
 	"lockfileVersion": 1,
 	"requires": true,
 	"dependencies": {
@@ -82,9 +82,9 @@
 			"dev": true
 		},
 		"bluebird": {
-			"version": "3.5.1",
-			"resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.1.tgz",
-			"integrity": "sha512-MKiLiV+I1AA596t9w1sQJ8jkiSr5+ZKi0WKrYGUn6d1Fx+Ij4tIj+m2WMQSGczs5jZVxV339chE8iwk6F64wjA==",
+			"version": "3.5.3",
+			"resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.3.tgz",
+			"integrity": "sha512-/qKPUQlaW1OyR51WeCPBvRnAlnZFUJkCSG5HzGnuIqhgyJtF+T94lFnn33eiazjRm2LAHVy2guNnaq48X9SJuw==",
 			"dev": true
 		},
 		"brace-expansion": {
@@ -97,12 +97,6 @@
 				"concat-map": "0.0.1"
 			}
 		},
-		"builtin-modules": {
-			"version": "1.1.1",
-			"resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-1.1.1.tgz",
-			"integrity": "sha1-Jw8HbFpywC9bZaR9+Uxf46J4iS8=",
-			"dev": true
-		},
 		"cache-swap": {
 			"version": "0.3.0",
 			"resolved": "https://registry.npmjs.org/cache-swap/-/cache-swap-0.3.0.tgz",
@@ -143,9 +137,9 @@
 			}
 		},
 		"chalk": {
-			"version": "2.4.1",
-			"resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
-			"integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
+			"version": "2.4.2",
+			"resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+			"integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
 			"dev": true,
 			"requires": {
 				"ansi-styles": "^3.2.1",
@@ -236,9 +230,9 @@
 			"dev": true
 		},
 		"esprima": {
-			"version": "2.7.3",
-			"resolved": "https://registry.npmjs.org/esprima/-/esprima-2.7.3.tgz",
-			"integrity": "sha1-luO3DVd59q1JzQMmc9HDEnZ7pYE=",
+			"version": "4.0.1",
+			"resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
+			"integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==",
 			"dev": true
 		},
 		"eventemitter2": {
@@ -306,13 +300,14 @@
 			"dev": true
 		},
 		"gettext-parser": {
-			"version": "1.3.1",
-			"resolved": "https://registry.npmjs.org/gettext-parser/-/gettext-parser-1.3.1.tgz",
-			"integrity": "sha512-W4t55eB/c7WrH0gbCHFiHuaEnJ1WiPJVnbFFiNEoh2QkOmuSLxs0PmJDGAmCQuTJCU740Fmb6D+2D/2xECWZGQ==",
+			"version": "3.1.1",
+			"resolved": "https://registry.npmjs.org/gettext-parser/-/gettext-parser-3.1.1.tgz",
+			"integrity": "sha512-vNhWcqXEtZPs5Ft1ReA34g7ByWotpcOIeJvXVy2jF3/G2U9v6W0wG4Z4hXzcU8R//jArqkgHcVCGgGqa4vxVlQ==",
 			"dev": true,
 			"requires": {
 				"encoding": "^0.1.12",
-				"safe-buffer": "^5.1.1"
+				"readable-stream": "^3.2.0",
+				"safe-buffer": "^5.1.2"
 			}
 		},
 		"glob": {
@@ -336,9 +331,9 @@
 			"dev": true
 		},
 		"grunt": {
-			"version": "1.0.3",
-			"resolved": "https://registry.npmjs.org/grunt/-/grunt-1.0.3.tgz",
-			"integrity": "sha512-/JzmZNPfKorlCrrmxWqQO4JVodO+DVd5XX4DkocL/1WlLlKVLE9+SdEIempOAxDhWPysLle6afvn/hg7Ck2k9g==",
+			"version": "1.0.4",
+			"resolved": "https://registry.npmjs.org/grunt/-/grunt-1.0.4.tgz",
+			"integrity": "sha512-PYsMOrOC+MsdGEkFVwMaMyc6Ob7pKmq+deg1Sjr+vvMWp35sztfwKE7qoN51V+UEtHsyNuMcGdgMLFkBHvMxHQ==",
 			"dev": true,
 			"requires": {
 				"coffeescript": "~1.10.0",
@@ -352,7 +347,7 @@
 				"grunt-legacy-log": "~2.0.0",
 				"grunt-legacy-util": "~1.1.1",
 				"iconv-lite": "~0.4.13",
-				"js-yaml": "~3.5.2",
+				"js-yaml": "~3.13.0",
 				"minimatch": "~3.0.2",
 				"mkdirp": "~0.5.1",
 				"nopt": "~3.0.6",
@@ -372,13 +367,35 @@
 						"resolve": "~1.1.0"
 					}
 				},
+				"resolve": {
+					"version": "1.1.7",
+					"resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
+					"integrity": "sha1-IDEU2CrSxe2ejgQRs5ModeiJ6Xs=",
+					"dev": true
+				},
 				"rimraf": {
-					"version": "2.6.2",
-					"resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.2.tgz",
-					"integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
+					"version": "2.6.3",
+					"resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
+					"integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
 					"dev": true,
 					"requires": {
-						"glob": "^7.0.5"
+						"glob": "^7.1.3"
+					},
+					"dependencies": {
+						"glob": {
+							"version": "7.1.3",
+							"resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
+							"integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
+							"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"
+							}
+						}
 					}
 				}
 			}
@@ -437,14 +454,6 @@
 			"requires": {
 				"chalk": "~2.4.1",
 				"lodash": "~4.17.10"
-			},
-			"dependencies": {
-				"lodash": {
-					"version": "4.17.11",
-					"resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
-					"integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==",
-					"dev": true
-				}
 			}
 		},
 		"grunt-legacy-util": {
@@ -460,14 +469,6 @@
 				"lodash": "~4.17.10",
 				"underscore.string": "~3.3.4",
 				"which": "~1.3.0"
-			},
-			"dependencies": {
-				"lodash": {
-					"version": "4.17.11",
-					"resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
-					"integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==",
-					"dev": true
-				}
 			}
 		},
 		"grunt-phpcs": {
@@ -754,63 +755,13 @@
 			"dev": true
 		},
 		"grunt-wp-i18n": {
-			"version": "1.0.2",
-			"resolved": "https://registry.npmjs.org/grunt-wp-i18n/-/grunt-wp-i18n-1.0.2.tgz",
-			"integrity": "sha512-s7DdR1wRYWvgeQOELL/s8AmWz0scVUq+h0yYVWvLx23kTXOBslvaD35NTvubyM+MO+k29bgND0gDDvS6sHixfg==",
+			"version": "1.0.3",
+			"resolved": "https://registry.npmjs.org/grunt-wp-i18n/-/grunt-wp-i18n-1.0.3.tgz",
+			"integrity": "sha512-CJNbEKeBeOSAPeaJ9B8iCgSwtaG63UR9/uT46a4OsIqnFhOJpeAi138JTlvjfIbnDVoBrzvdrKJe1svveLjUtA==",
 			"dev": true,
 			"requires": {
-				"grunt": "^1.0.2",
-				"node-wp-i18n": "^1.0.5"
-			},
-			"dependencies": {
-				"grunt": {
-					"version": "1.0.3",
-					"resolved": "https://registry.npmjs.org/grunt/-/grunt-1.0.3.tgz",
-					"integrity": "sha512-/JzmZNPfKorlCrrmxWqQO4JVodO+DVd5XX4DkocL/1WlLlKVLE9+SdEIempOAxDhWPysLle6afvn/hg7Ck2k9g==",
-					"dev": true,
-					"requires": {
-						"coffeescript": "~1.10.0",
-						"dateformat": "~1.0.12",
-						"eventemitter2": "~0.4.13",
-						"exit": "~0.1.1",
-						"findup-sync": "~0.3.0",
-						"glob": "~7.0.0",
-						"grunt-cli": "~1.2.0",
-						"grunt-known-options": "~1.1.0",
-						"grunt-legacy-log": "~2.0.0",
-						"grunt-legacy-util": "~1.1.1",
-						"iconv-lite": "~0.4.13",
-						"js-yaml": "~3.5.2",
-						"minimatch": "~3.0.2",
-						"mkdirp": "~0.5.1",
-						"nopt": "~3.0.6",
-						"path-is-absolute": "~1.0.0",
-						"rimraf": "~2.6.2"
-					},
-					"dependencies": {
-						"grunt-cli": {
-							"version": "1.2.0",
-							"resolved": "http://registry.npmjs.org/grunt-cli/-/grunt-cli-1.2.0.tgz",
-							"integrity": "sha1-VisRnrsGndtGSs4oRVAb6Xs1tqg=",
-							"dev": true,
-							"requires": {
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-								"grunt-known-options": "~1.1.0",
-								"nopt": "~3.0.6",
-								"resolve": "~1.1.0"
-							}
-						},
-						"rimraf": {
-							"version": "2.6.2",
-							"resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.2.tgz",
-							"integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
-							"dev": true,
-							"requires": {
-								"glob": "^7.0.5"
-							}
-						}
-					}
-				}
+				"grunt": "^1.0.3",
+				"node-wp-i18n": "^1.2.2"
 			}
 		},
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@@ -838,12 +789,12 @@
 			"dev": true
 		},
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+			"version": "0.4.24",
+			"resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
+			"integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
 			"dev": true,
 			"requires": {
-				"safer-buffer": "^2.1.0"
+				"safer-buffer": ">= 2.1.2 < 3"
 			}
 		},
 		"indent-string": {
@@ -877,15 +828,6 @@
 			"integrity": "sha1-d8mYQFJ6qOyxqLppe4BkWnqSap0=",
 			"dev": true
 		},
-		"is-builtin-module": {
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-			"resolved": "https://registry.npmjs.org/is-builtin-module/-/is-builtin-module-1.0.0.tgz",
-			"integrity": "sha1-VAVy0096wxGfj3bDDLwbHgN6/74=",
-			"dev": true,
-			"requires": {
-				"builtin-modules": "^1.0.0"
-			}
-		},
 		"is-finite": {
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 			"resolved": "https://registry.npmjs.org/is-finite/-/is-finite-1.0.2.tgz",
@@ -908,13 +850,13 @@
 			"dev": true
 		},
 		"js-yaml": {
-			"version": "3.5.5",
-			"resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.5.5.tgz",
-			"integrity": "sha1-A3fDgBfKvHMisNH7zSWkkWQfL74=",
+			"version": "3.13.0",
+			"resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.0.tgz",
+			"integrity": "sha512-pZZoSxcCYco+DIKBTimr67J6Hy+EYGZDY/HCWC+iAEA9h1ByhMXAIVUXMcMFpOCxQ/xjXmPI2MkDL5HRm5eFrQ==",
 			"dev": true,
 			"requires": {
-				"argparse": "^1.0.2",
-				"esprima": "^2.6.0"
+				"argparse": "^1.0.7",
+				"esprima": "^4.0.0"
 			}
 		},
 		"load-grunt-tasks": {
@@ -961,9 +903,9 @@
 			}
 		},
 		"lodash": {
-			"version": "4.17.5",
-			"resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.5.tgz",
-			"integrity": "sha512-svL3uiZf1RwhH+cWrfZn3A4+U58wbP0tGVTLQPbjplZxZ8ROD9VLuNgsRniTlLe7OlSqR79RUehXgpBW/s0IQw==",
+			"version": "4.17.11",
+			"resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
+			"integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==",
 			"dev": true
 		},
 		"loud-rejection": {
@@ -1051,13 +993,13 @@
 			}
 		},
 		"node-wp-i18n": {
-			"version": "1.1.1",
-			"resolved": "https://registry.npmjs.org/node-wp-i18n/-/node-wp-i18n-1.1.1.tgz",
-			"integrity": "sha512-SI3+vhddQDBh2pkOowqPdXs/YN/bRnNvR4gDmcSJaQ4P+z8jSuPRZTFFClaD/fVv0AG0zY/ku07oQuayr844Mg==",
+			"version": "1.2.3",
+			"resolved": "https://registry.npmjs.org/node-wp-i18n/-/node-wp-i18n-1.2.3.tgz",
+			"integrity": "sha512-YMzMcsjXbGYDB9vHyb289CYXAGmXhcNLbeTlOnWgPNkZd9xrovcbRd7cQyKd9BQHOjS7Nw8WCbJ7nvtR7rc0rg==",
 			"dev": true,
 			"requires": {
 				"bluebird": "^3.4.1",
-				"gettext-parser": "^1.2.0",
+				"gettext-parser": "^3.1.0",
 				"glob": "^7.0.5",
 				"lodash": "^4.14.2",
 				"minimist": "^1.2.0",
@@ -1075,13 +1017,13 @@
 			}
 		},
 		"normalize-package-data": {
-			"version": "2.4.0",
-			"resolved": "https://registry.npmjs.org/normalize-package-data/-/normalize-package-data-2.4.0.tgz",
-			"integrity": "sha512-9jjUFbTPfEy3R/ad/2oNbKtW9Hgovl5O1FvFWKkKblNXoN/Oou6+9+KKohPK13Yc3/TyunyWhJp6gvRNR/PPAw==",
+			"version": "2.5.0",
+			"resolved": "https://registry.npmjs.org/normalize-package-data/-/normalize-package-data-2.5.0.tgz",
+			"integrity": "sha512-/5CMN3T0R4XTj4DcGaexo+roZSdSFW/0AOOTROrjxzCG1wrWXEsGbRKevjlIL+ZDE4sZlJr5ED4YW0yqmkK+eA==",
 			"dev": true,
 			"requires": {
 				"hosted-git-info": "^2.1.4",
-				"is-builtin-module": "^1.0.0",
+				"resolve": "^1.10.0",
 				"semver": "2 || 3 || 4 || 5",
 				"validate-npm-package-license": "^3.0.1"
 			}
@@ -1161,6 +1103,12 @@
 			"integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
 			"dev": true
 		},
+		"path-parse": {
+			"version": "1.0.6",
+			"resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
+			"integrity": "sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==",
+			"dev": true
+		},
 		"path-type": {
 			"version": "1.1.0",
 			"resolved": "https://registry.npmjs.org/path-type/-/path-type-1.1.0.tgz",
@@ -1234,6 +1182,17 @@
 				"read-pkg": "^1.0.0"
 			}
 		},
+		"readable-stream": {
+			"version": "3.2.0",
+			"resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.2.0.tgz",
+			"integrity": "sha512-RV20kLjdmpZuTF1INEb9IA3L68Nmi+Ri7ppZqo78wj//Pn62fCoJyV9zalccNzDD/OuJpMG4f+pfMl8+L6QdGw==",
+			"dev": true,
+			"requires": {
+				"inherits": "^2.0.3",
+				"string_decoder": "^1.1.1",
+				"util-deprecate": "^1.0.1"
+			}
+		},
 		"redent": {
 			"version": "1.0.0",
 			"resolved": "https://registry.npmjs.org/redent/-/redent-1.0.0.tgz",
@@ -1254,10 +1213,13 @@
 			}
 		},
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-			"version": "1.1.7",
-			"resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
-			"integrity": "sha1-IDEU2CrSxe2ejgQRs5ModeiJ6Xs=",
-			"dev": true
+			"version": "1.10.0",
+			"resolved": "https://registry.npmjs.org/resolve/-/resolve-1.10.0.tgz",
+			"integrity": "sha512-3sUr9aq5OfSg2S9pNtPA9hL1FVEAjvfOC4leW0SNf/mpnaakz2a9femSd6LqAww2RaFctwyf1lCqnTHuF1rxDg==",
+			"dev": true,
+			"requires": {
+				"path-parse": "^1.0.6"
+			}
 		},
 		"resolve-from": {
 			"version": "2.0.0",
@@ -1281,9 +1243,9 @@
 			"dev": true
 		},
 		"safe-buffer": {
-			"version": "5.1.1",
-			"resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
-			"integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
+			"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
 		},
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@@ -1293,9 +1255,9 @@
 			"dev": true
 		},
 		"semver": {
-			"version": "5.6.0",
-			"resolved": "https://registry.npmjs.org/semver/-/semver-5.6.0.tgz",
-			"integrity": "sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==",
+			"version": "5.7.0",
+			"resolved": "https://registry.npmjs.org/semver/-/semver-5.7.0.tgz",
+			"integrity": "sha512-Ya52jSX2u7QKghxeoFGpLwCtGlt7j0oY9DYb5apt9nPlJ42ID+ulTXESnt/qAQcoSERyZ5sl3LDIOw0nAn/5DA==",
 			"dev": true
 		},
 		"sigmund": {
@@ -1311,9 +1273,9 @@
 			"dev": true
 		},
 		"spdx-correct": {
-			"version": "3.0.2",
-			"resolved": "https://registry.npmjs.org/spdx-correct/-/spdx-correct-3.0.2.tgz",
-			"integrity": "sha512-q9hedtzyXHr5S0A1vEPoK/7l8NpfkFYTq6iCY+Pno2ZbdZR6WexZFtqeVGkGxW3TEJMN914Z55EnAGMmenlIQQ==",
+			"version": "3.1.0",
+			"resolved": "https://registry.npmjs.org/spdx-correct/-/spdx-correct-3.1.0.tgz",
+			"integrity": "sha512-lr2EZCctC2BNR7j7WzJ2FpDznxky1sjfxvvYEyzxNyb6lZXHODmEoJeFu4JupYlkfha1KZpJyoqiJ7pgA1qq8Q==",
 			"dev": true,
 			"requires": {
 				"spdx-expression-parse": "^3.0.0",
@@ -1337,17 +1299,26 @@
 			}
 		},
 		"spdx-license-ids": {
-			"version": "3.0.2",
-			"resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.2.tgz",
-			"integrity": "sha512-qky9CVt0lVIECkEsYbNILVnPvycuEBkXoMFLRWsREkomQLevYhtRKC+R91a5TOAQ3bCMjikRwhyaRqj1VYatYg==",
+			"version": "3.0.3",
+			"resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.3.tgz",
+			"integrity": "sha512-uBIcIl3Ih6Phe3XHK1NqboJLdGfwr1UN3k6wSD1dZpmPsIkb8AGNbZYJ1fOBk834+Gxy8rpfDxrS6XLEMZMY2g==",
 			"dev": true
 		},
 		"sprintf-js": {
-			"version": "1.1.1",
-			"resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.1.tgz",
-			"integrity": "sha1-Nr54Mgr+WAH2zqPueLblqrlA6gw=",
+			"version": "1.1.2",
+			"resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.2.tgz",
+			"integrity": "sha512-VE0SOVEHCk7Qc8ulkWw3ntAzXuqf7S2lvwQaDLRnUeIEaKNQJzV6BwmLKhOqT61aGhfUMrXeaBk+oDGCzvhcug==",
 			"dev": true
 		},
+		"string_decoder": {
+			"version": "1.2.0",
+			"resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.2.0.tgz",
+			"integrity": "sha512-6YqyX6ZWEYguAxgZzHGL7SsCeGx3V2TtOTqZz1xSTSWnqsbWwbptafNyvf/ACquZUXV3DANr5BDIwNYe1mN42w==",
+			"dev": true,
+			"requires": {
+				"safe-buffer": "~5.1.0"
+			}
+		},
 		"strip-bom": {
 			"version": "2.0.0",
 			"resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-2.0.0.tgz",
diff --git a/package.json b/package.json
index 00db5a3..6a45b60 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "wp-money",
-	"version": "1.2.0",
+	"version": "1.2.1",
 	"description": "WordPress Money library.",
 	"repository": {
 		"type": "git",
@@ -19,12 +19,12 @@
 	},
 	"homepage": "https://github.com/pronamic/wp-money#readme",
 	"devDependencies": {
-		"grunt": "^1.0.3",
+		"grunt": "^1.0.4",
 		"grunt-checktextdomain": "^1.0.1",
 		"grunt-phpcs": "^0.4.0",
 		"grunt-phplint": "0.1.0",
 		"grunt-phpunit": "^0.3.6",
-		"grunt-wp-i18n": "^1.0.2",
+		"grunt-wp-i18n": "^1.0.3",
 		"load-grunt-tasks": "^4.0.0"
 	}
 }
diff --git a/pronamic-money.php b/pronamic-money.php
index 5e5b9fd..52ba67a 100644
--- a/pronamic-money.php
+++ b/pronamic-money.php
@@ -4,7 +4,7 @@
  * Plugin URI: https://www.pronamic.eu/plugins/pronamic-money/
  * Description: WordPress Money library.
  *
- * Version: 1.2.0
+ * Version: 1.2.1
  * Requires at least: 4.7
  *
  * Author: Pronamic
diff --git a/src/Currencies.php b/src/Currencies.php
index 1044ecf..a22c99d 100644
--- a/src/Currencies.php
+++ b/src/Currencies.php
@@ -16,7 +16,7 @@
  * @link https://github.com/moneyphp/money/blob/v3.1.3/resources/currency.php
  *
  * @author  Remco Tolsma
- * @version 1.2.0
+ * @version 1.2.1
  * @since   1.0.0
  */
 class Currencies {
diff --git a/src/Currency.php b/src/Currency.php
index 21364c4..9208654 100644
--- a/src/Currency.php
+++ b/src/Currency.php
@@ -14,7 +14,7 @@
  * Currency
  *
  * @author  Remco Tolsma
- * @version 1.2.0
+ * @version 1.2.1
  * @since   1.0.0
  */
 class Currency {
diff --git a/src/Money.php b/src/Money.php
index 59aa9e9..bcdaccf 100644
--- a/src/Money.php
+++ b/src/Money.php
@@ -14,7 +14,7 @@
  * Money
  *
  * @author Remco Tolsma
- * @version 1.2.0
+ * @version 1.2.1
  * @since   1.0.0
  */
 class Money {
@@ -120,6 +120,8 @@ public function get_cents() {
 	 *   BHD 3 decimals: 10000
 	 *   NLG 4 decimals: 100000
 	 *
+	 * @since 1.2.1
+	 *
 	 * @return int
 	 */
 	public function get_minor_units() {
diff --git a/src/Parser.php b/src/Parser.php
index 15b0e96..3e4d408 100644
--- a/src/Parser.php
+++ b/src/Parser.php
@@ -14,7 +14,7 @@
  * Parser
  *
  * @author  Remco Tolsma
- * @version 1.2.0
+ * @version 1.2.1
  * @since   1.1.0
  */
 class Parser {
diff --git a/src/TaxedMoney.php b/src/TaxedMoney.php
index a93b864..ee34c2c 100644
--- a/src/TaxedMoney.php
+++ b/src/TaxedMoney.php
@@ -14,7 +14,7 @@
  * Taxed Money
  *
  * @author Remco Tolsma
- * @version 1.2.0
+ * @version 1.2.1
  * @since   1.2.0
  */
 class TaxedMoney extends Money {
diff --git a/tests/src/MoneyTest.php b/tests/src/MoneyTest.php
index d4e3b3e..f47b468 100644
--- a/tests/src/MoneyTest.php
+++ b/tests/src/MoneyTest.php
@@ -17,7 +17,7 @@
  * Money
  *
  * @author Remco Tolsma
- * @version 1.2.0
+ * @version 1.2.1
  * @since   1.0.0
  */
 class MoneyTest extends WP_UnitTestCase {
@@ -169,6 +169,8 @@ public function test_cents() {
 	/**
 	 * Test minor units.
 	 *
+	 * @since 1.2.1
+	 *
 	 * @dataProvider minor_units_provider
 	 *
 	 * @param string $currency Currency.
@@ -183,6 +185,8 @@ public function test_minor_units( $currency, $expected ) {
 	/**
 	 * Minor units provider.
 	 *
+	 * @since 1.2.1
+	 *
 	 * @return array
 	 */
 	public function minor_units_provider() {
diff --git a/tests/src/ParserTest.php b/tests/src/ParserTest.php
index d51522b..f39315b 100644
--- a/tests/src/ParserTest.php
+++ b/tests/src/ParserTest.php
@@ -16,7 +16,7 @@
  * Parser
  *
  * @author  Remco Tolsma
- * @version 1.2.0
+ * @version 1.2.1
  * @since   1.1.0
  */
 class ParserTest extends WP_UnitTestCase {