diff --git a/composer.json b/composer.json
index 57a2a02..51e7cad 100644
--- a/composer.json
+++ b/composer.json
@@ -10,6 +10,7 @@
         }
     ],
     "require": {
-        "kbsali/redmine-api": "~1.0"
+        "kbsali/redmine-api": "~1.0",
+        "vlucas/phpdotenv": "^2.4"
     }
 }
diff --git a/composer.lock b/composer.lock
index e4516a1..a5b07d3 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "058c0024cf565acfc2efd3009a2cbfe7",
+    "content-hash": "7704414b9f760b0c6b1260a4051c1f16",
     "packages": [
         {
             "name": "kbsali/redmine-api",
@@ -54,6 +54,56 @@
                 "redmine"
             ],
             "time": "2017-11-13T12:56:24+00:00"
+        },
+        {
+            "name": "vlucas/phpdotenv",
+            "version": "v2.4.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/vlucas/phpdotenv.git",
+                "reference": "3cc116adbe4b11be5ec557bf1d24dc5e3a21d18c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/vlucas/phpdotenv/zipball/3cc116adbe4b11be5ec557bf1d24dc5e3a21d18c",
+                "reference": "3cc116adbe4b11be5ec557bf1d24dc5e3a21d18c",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.9"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8 || ^5.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.4-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Dotenv\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause-Attribution"
+            ],
+            "authors": [
+                {
+                    "name": "Vance Lucas",
+                    "email": "vance@vancelucas.com",
+                    "homepage": "http://www.vancelucas.com"
+                }
+            ],
+            "description": "Loads environment variables from `.env` to `getenv()`, `$_ENV` and `$_SERVER` automagically.",
+            "keywords": [
+                "dotenv",
+                "env",
+                "environment"
+            ],
+            "time": "2016-09-01T10:05:43+00:00"
         }
     ],
     "packages-dev": [],