diff --git a/composer.lock b/composer.lock
index cb68ecb..85c84c7 100644
--- a/composer.lock
+++ b/composer.lock
@@ -759,16 +759,16 @@
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.5.3",
+            "version": "1.5.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "94e5ca3e90aa5b34663780393e10914f7438f991"
+                "reference": "ea74994a3dc7f8d2f65a06009348f2d63c81e61f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/94e5ca3e90aa5b34663780393e10914f7438f991",
-                "reference": "94e5ca3e90aa5b34663780393e10914f7438f991",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/ea74994a3dc7f8d2f65a06009348f2d63c81e61f",
+                "reference": "ea74994a3dc7f8d2f65a06009348f2d63c81e61f",
                 "shasum": ""
             },
             "require": {
@@ -797,7 +797,7 @@
                 "object",
                 "object graph"
             ],
-            "time": "2016-09-07 15:34:10"
+            "time": "2016-09-16 13:37:59"
         },
         {
             "name": "phpdocumentor/reflection-common",