diff --git a/README.md b/README.md
index a2375d9..b8cd162 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ It may also be used as the means of [separating custom code](http://www.billeric
 ## Requirements
 
 * WordPress 4.0 or higher
-* PHP 5.4 or higher
+* PHP 5.6 or higher
 * [Carbon Fields](https://github.com/htmlburger/carbon-fields) 2.0 or higher (see [Dependencies](https://github.com/dmhendricks/wordpress-base-plugin/wiki#dependencies) for more info)
 
 ## Installation
diff --git a/composer.json b/composer.json
index 9cf7de9..ee5c433 100644
--- a/composer.json
+++ b/composer.json
@@ -40,7 +40,7 @@
     }
   ],
   "require": {
-    "php": ">=5.4.0",
+    "php": ">=5.6.0",
     "PHLAK/Config": "^2.0.0",
     "jjgrainger/posttypes": "dev-master",
     "tgmpa/tgm-plugin-activation": "^2.6.0",
diff --git a/readme.txt b/readme.txt
index 6a291cc..a8afd92 100644
--- a/readme.txt
+++ b/readme.txt
@@ -17,7 +17,8 @@ It is intended to be used as a starting point for quickly creating WordPress plu
 = Requirements =
 
 * WordPress 4.0 or higher
-* PHP 5.4 or higher
+* PHP 5.6 or higher
+* [Carbon Fields](https://github.com/htmlburger/carbon-fields) 2.0 or higher (see [Dependencies](https://github.com/dmhendricks/wordpress-base-plugin/wiki#dependencies) for more info)
 
 == Installation ==
 
diff --git a/wordpress-plugin.json b/wordpress-plugin.json
index e43e356..fc0b49e 100644
--- a/wordpress-plugin.json
+++ b/wordpress-plugin.json
@@ -6,7 +6,7 @@
     "expire_hours": 72
   },
   "dependencies": {
-    "php": "5.4.0",
+    "php": "5.6",
     "carbon_fields": "2.0"
   },
   "encrypt_method": "AES-128-ECB"