diff --git a/composer.lock b/composer.lock
index 8d36028..07b730a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,21 +4,20 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "5c7439c6e041764f2f6b0270a95ab3ae",
     "content-hash": "e4e700119f47d2f68b0ed82abaf8c5c6",
     "packages": [
         {
             "name": "catfan/medoo",
-            "version": "v1.5.7",
+            "version": "v1.6.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/catfan/Medoo.git",
-                "reference": "8d90cba0e8ff176028847527d0ea76fe41a06ecf"
+                "reference": "53a02b300d673f716cb06bf0e24fd774ec53939f"
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                 "type": "zip",
-                "url": "https://api.github.com/repos/catfan/Medoo/zipball/8d90cba0e8ff176028847527d0ea76fe41a06ecf",
-                "reference": "8d90cba0e8ff176028847527d0ea76fe41a06ecf",
+                "url": "https://api.github.com/repos/catfan/Medoo/zipball/53a02b300d673f716cb06bf0e24fd774ec53939f",
+                "reference": "53a02b300d673f716cb06bf0e24fd774ec53939f",
                 "shasum": ""
             },
             "require": {
@@ -64,7 +63,7 @@
                 "sql",
                 "sqlite"
             ],
-            "time": "2018-06-14 18:59:08"
+            "time": "2018-12-08T20:24:23+00:00"
         },
         {
             "name": "guzzlehttp/guzzle",
@@ -129,7 +128,7 @@
                 "rest",
                 "web service"
             ],
-            "time": "2018-04-22 15:46:56"
+            "time": "2018-04-22T15:46:56+00:00"
         },
         {
             "name": "guzzlehttp/promises",
@@ -180,36 +179,37 @@
             "keywords": [
                 "promise"
             ],
-            "time": "2016-12-20 10:07:11"
+            "time": "2016-12-20T10:07:11+00:00"
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "1.4.2",
+            "version": "1.5.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "f5b8a8512e2b58b0071a7280e39f14f72e05d87c"
+                "reference": "9f83dded91781a01c63574e387eaa769be769115"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/f5b8a8512e2b58b0071a7280e39f14f72e05d87c",
-                "reference": "f5b8a8512e2b58b0071a7280e39f14f72e05d87c",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/9f83dded91781a01c63574e387eaa769be769115",
+                "reference": "9f83dded91781a01c63574e387eaa769be769115",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.4.0",
-                "psr/http-message": "~1.0"
+                "psr/http-message": "~1.0",
+                "ralouphie/getallheaders": "^2.0.5"
             },
             "provide": {
                 "psr/http-message-implementation": "1.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.0"
+                "phpunit/phpunit": "~4.8.36 || ^5.7.27 || ^6.5.8"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.4-dev"
+                    "dev-master": "1.5-dev"
                 }
             },
             "autoload": {
@@ -239,13 +239,14 @@
             "keywords": [
                 "http",
                 "message",
+                "psr-7",
                 "request",
                 "response",
                 "stream",
                 "uri",
                 "url"
             ],
-            "time": "2017-03-20 17:10:46"
+            "time": "2018-12-04T20:46:45+00:00"
         },
         {
             "name": "psr/http-message",
@@ -295,7 +296,47 @@
                 "request",
                 "response"
             ],
-            "time": "2016-08-06 14:39:51"
+            "time": "2016-08-06T14:39:51+00:00"
+        },
+        {
+            "name": "ralouphie/getallheaders",
+            "version": "2.0.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ralouphie/getallheaders.git",
+                "reference": "5601c8a83fbba7ef674a7369456d12f1e0d0eafa"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ralouphie/getallheaders/zipball/5601c8a83fbba7ef674a7369456d12f1e0d0eafa",
+                "reference": "5601c8a83fbba7ef674a7369456d12f1e0d0eafa",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~3.7.0",
+                "satooshi/php-coveralls": ">=1.0"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "src/getallheaders.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ralph Khattar",
+                    "email": "ralph.khattar@gmail.com"
+                }
+            ],
+            "description": "A polyfill for getallheaders.",
+            "time": "2016-02-11T07:05:27+00:00"
         }
     ],
     "packages-dev": [],