diff --git a/composer.json b/composer.json
index f636db8..4545053 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
         "knplabs/github-api": "~2.11",
         "php-http/guzzle6-adapter": "^1.1",
         "provision-ops/power-process": "1.4.0-rc2",
-        "vlucas/phpdotenv": "~2"
+        "vlucas/phpdotenv": "~4"
     },
     "autoload": {
         "psr-4": {
diff --git a/composer.lock b/composer.lock
index 02ff037..e979379 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,10 +1,10 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "cc3534a3cb2a4d3ec7c6efa91399b0ae",
+    "content-hash": "414457d31386316896fe576fed5dfe7b",
     "packages": [
         {
             "name": "clue/stream-filter",
@@ -1558,6 +1558,61 @@
             ],
             "time": "2016-01-26T13:27:02+00:00"
         },
+        {
+            "name": "phpoption/phpoption",
+            "version": "1.7.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/schmittjoh/php-option.git",
+                "reference": "77f7c4d2e65413aff5b5a8cc8b3caf7a28d81959"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/schmittjoh/php-option/zipball/77f7c4d2e65413aff5b5a8cc8b3caf7a28d81959",
+                "reference": "77f7c4d2e65413aff5b5a8cc8b3caf7a28d81959",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.5.9 || ^7.0"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.3",
+                "phpunit/phpunit": "^4.8.35 || ^5.0 || ^6.0 || ^7.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.7-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "PhpOption\\": "src/PhpOption/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "Apache-2.0"
+            ],
+            "authors": [
+                {
+                    "name": "Johannes M. Schmitt",
+                    "email": "schmittjoh@gmail.com"
+                },
+                {
+                    "name": "Graham Campbell",
+                    "email": "graham@alt-three.com"
+                }
+            ],
+            "description": "Option Type for PHP",
+            "keywords": [
+                "language",
+                "option",
+                "php",
+                "type"
+            ],
+            "time": "2019-12-15T19:35:24+00:00"
+        },
         {
             "name": "provision-ops/power-process",
             "version": "1.4.0-rc2",
@@ -2527,29 +2582,35 @@
         },
         {
             "name": "vlucas/phpdotenv",
-            "version": "v2.6.1",
+            "version": "v4.1.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vlucas/phpdotenv.git",
-                "reference": "2a7dcf7e3e02dc5e701004e51a6f304b713107d5"
+                "reference": "939dfda2d7267ac8fc53ac3d642b5de357554c39"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vlucas/phpdotenv/zipball/2a7dcf7e3e02dc5e701004e51a6f304b713107d5",
-                "reference": "2a7dcf7e3e02dc5e701004e51a6f304b713107d5",
+                "url": "https://api.github.com/repos/vlucas/phpdotenv/zipball/939dfda2d7267ac8fc53ac3d642b5de357554c39",
+                "reference": "939dfda2d7267ac8fc53ac3d642b5de357554c39",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.9",
+                "php": "^5.5.9 || ^7.0",
+                "phpoption/phpoption": "^1.7.2",
                 "symfony/polyfill-ctype": "^1.9"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.8.35 || ^5.0"
+                "bamarni/composer-bin-plugin": "^1.3",
+                "ext-filter": "*",
+                "phpunit/phpunit": "^4.8.35 || ^5.0 || ^6.0 || ^7.0"
+            },
+            "suggest": {
+                "ext-filter": "Required to use the boolean validator."
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.6-dev"
+                    "dev-master": "4.1-dev"
                 }
             },
             "autoload": {
@@ -2562,10 +2623,15 @@
                 "BSD-3-Clause"
             ],
             "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "graham@alt-three.com",
+                    "homepage": "https://gjcampbell.co.uk/"
+                },
                 {
                     "name": "Vance Lucas",
                     "email": "vance@vancelucas.com",
-                    "homepage": "http://www.vancelucas.com"
+                    "homepage": "https://vancelucas.com/"
                 }
             ],
             "description": "Loads environment variables from `.env` to `getenv()`, `$_ENV` and `$_SERVER` automagically.",
@@ -2574,7 +2640,7 @@
                 "env",
                 "environment"
             ],
-            "time": "2019-01-29T11:11:52+00:00"
+            "time": "2020-03-12T13:44:15+00:00"
         }
     ],
     "packages-dev": [
@@ -2665,6 +2731,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
+        "composer-plugin-api": "^1.1",
         "ext-json": "*"
     },
     "platform-dev": [],