diff --git a/composer.json b/composer.json
index ed73ad1..5f34fcf 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
 	"require": {
 		"php": ">=7.4",
 		"phpgt/cli": "1.*",
-		"dragonmantank/cron-expression": "^2.2"
+		"dragonmantank/cron-expression": "^3.3"
 	},
 	"require-dev": {
 		"phpstan/phpstan": "^v1.8",
diff --git a/composer.lock b/composer.lock
index 71a1cfb..1104b3d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,34 +4,36 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "3f8dc6f5d84b59423e81238c83c12be5",
+    "content-hash": "fae18af2695416853479add46df23eb6",
     "packages": [
         {
             "name": "dragonmantank/cron-expression",
-            "version": "v2.3.1",
+            "version": "v3.3.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/dragonmantank/cron-expression.git",
-                "reference": "65b2d8ee1f10915efb3b55597da3404f096acba2"
+                "reference": "be85b3f05b46c39bbc0d95f6c071ddff669510fa"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/dragonmantank/cron-expression/zipball/65b2d8ee1f10915efb3b55597da3404f096acba2",
-                "reference": "65b2d8ee1f10915efb3b55597da3404f096acba2",
+                "url": "https://api.github.com/repos/dragonmantank/cron-expression/zipball/be85b3f05b46c39bbc0d95f6c071ddff669510fa",
+                "reference": "be85b3f05b46c39bbc0d95f6c071ddff669510fa",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0|^8.0"
+                "php": "^7.2|^8.0",
+                "webmozart/assert": "^1.0"
+            },
+            "replace": {
+                "mtdowling/cron-expression": "^1.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^6.4|^7.0|^8.0|^9.0"
+                "phpstan/extension-installer": "^1.0",
+                "phpstan/phpstan": "^1.0",
+                "phpstan/phpstan-webmozart-assert": "^1.0",
+                "phpunit/phpunit": "^7.0|^8.0|^9.0"
             },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.3-dev"
-                }
-            },
             "autoload": {
                 "psr-4": {
                     "Cron\\": "src/Cron/"
@@ -42,11 +44,6 @@
                 "MIT"
             ],
             "authors": [
-                {
-                    "name": "Michael Dowling",
-                    "email": "mtdowling@gmail.com",
-                    "homepage": "https://github.com/mtdowling"
-                },
                 {
                     "name": "Chris Tankersley",
                     "email": "chris@ctankersley.com",
@@ -60,7 +57,7 @@
             ],
             "support": {
                 "issues": "https://github.com/dragonmantank/cron-expression/issues",
-                "source": "https://github.com/dragonmantank/cron-expression/tree/v2.3.1"
+                "source": "https://github.com/dragonmantank/cron-expression/tree/v3.3.1"
             },
             "funding": [
                 {
@@ -68,7 +65,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-10-13T00:52:37+00:00"
+            "time": "2022-01-18T15:43:28+00:00"
         },
         {
             "name": "phpgt/cli",
@@ -169,6 +166,64 @@
                 }
             ],
             "time": "2021-02-02T17:33:16+00:00"
+        },
+        {
+            "name": "webmozart/assert",
+            "version": "1.11.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/webmozarts/assert.git",
+                "reference": "11cb2199493b2f8a3b53e7f19068fc6aac760991"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/webmozarts/assert/zipball/11cb2199493b2f8a3b53e7f19068fc6aac760991",
+                "reference": "11cb2199493b2f8a3b53e7f19068fc6aac760991",
+                "shasum": ""
+            },
+            "require": {
+                "ext-ctype": "*",
+                "php": "^7.2 || ^8.0"
+            },
+            "conflict": {
+                "phpstan/phpstan": "<0.12.20",
+                "vimeo/psalm": "<4.6.1 || 4.6.2"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^8.5.13"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.10-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Webmozart\\Assert\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@gmail.com"
+                }
+            ],
+            "description": "Assertions to validate method input/output with nice error messages.",
+            "keywords": [
+                "assert",
+                "check",
+                "validate"
+            ],
+            "support": {
+                "issues": "https://github.com/webmozarts/assert/issues",
+                "source": "https://github.com/webmozarts/assert/tree/1.11.0"
+            },
+            "time": "2022-06-03T18:03:27+00:00"
         }
     ],
     "packages-dev": [
@@ -1967,5 +2022,5 @@
         "php": ">=7.4"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.2.0"
+    "plugin-api-version": "2.3.0"
 }