diff --git a/composer.json b/composer.json
index 1a7f600d..ed6e7b28 100644
--- a/composer.json
+++ b/composer.json
@@ -5,15 +5,12 @@
 	"license": "MIT",
 	"require": {
 		"php": ">=5.4.0",
-		"symfony/http-foundation": "~2.1",
+		"symfony/http-foundation": "2.5.*",
 		"league/event": "1.0.*"
 	},
 	"require-dev": {
-		"phpunit/phpunit": "~4.0",
-		"mockery/mockery": "~0.9",
-		"league/phpunit-coverage-listener": "~1.0",
-		"squizlabs/php_codesniffer": "~1.5",
-		"codeception/codeception": "2.0.*",
+		"phpunit/phpunit": "4.3.*",
+		"mockery/mockery": "0.9.*",
 		"alexbilbie/fizzfuzz": "dev-develop"
 	},
 	"repositories": [