diff --git a/composer.json b/composer.json
index f1760253..3abc35d5 100644
--- a/composer.json
+++ b/composer.json
@@ -13,5 +13,8 @@
     },
     "require-dev": {
         "apigen/apigen": "~4.1"
+    },
+    "require": {
+        "gregwar/captcha": "^1.1"
     }
 }
diff --git a/composer.lock b/composer.lock
index 60b8218f..1c8014b7 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,9 +4,58 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "702af8286dbcc81d9dcc9c19f3ac8532",
-    "content-hash": "0ad352b88b9591e8a359a02355d35718",
-    "packages": [],
+    "hash": "75e06049c3451b1d883c03b8a4fc1a3c",
+    "content-hash": "500445974aa564048f14ea58a75b9635",
+    "packages": [
+        {
+            "name": "gregwar/captcha",
+            "version": "v1.1.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/Gregwar/Captcha.git",
+                "reference": "1240ab993ca713680573b2d4166900da5f758623"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/Gregwar/Captcha/zipball/1240ab993ca713680573b2d4166900da5f758623",
+                "reference": "1240ab993ca713680573b2d4166900da5f758623",
+                "shasum": ""
+            },
+            "require": {
+                "ext-gd": "*",
+                "php": ">=5.3.0"
+            },
+            "type": "captcha",
+            "autoload": {
+                "psr-4": {
+                    "Gregwar\\Captcha\\": "/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Grégoire Passault",
+                    "email": "g.passault@gmail.com",
+                    "homepage": "http://www.gregwar.com/"
+                },
+                {
+                    "name": "Jeremy Livingston",
+                    "email": "jeremy.j.livingston@gmail.com"
+                }
+            ],
+            "description": "Captcha generator",
+            "homepage": "https://github.com/Gregwar/Captcha",
+            "keywords": [
+                "bot",
+                "captcha",
+                "spam"
+            ],
+            "time": "2015-09-11 15:23:20"
+        }
+    ],
     "packages-dev": [
         {
             "name": "andrewsville/php-token-reflection",