diff --git a/composer.json b/composer.json
index ef7671c4..6b3a0adb 100644
--- a/composer.json
+++ b/composer.json
@@ -6,13 +6,13 @@
 	"require": {
 		"php": ">=5.4.0",
 		"symfony/http-foundation": "~2.1",
-		"league/event": "0.2.0"
+		"league/event": "0.2.*"
 	},
 	"require-dev": {
 		"phpunit/phpunit": "~4.0",
 		"mockery/mockery": "~0.9",
 		"league/phpunit-coverage-listener": "~1.0",
-		"squizlabs/php_codesniffer": "1.*",
+		"squizlabs/php_codesniffer": "~1.5",
 		"codeception/codeception": "2.0.*",
 		"alexbilbie/fizzfuzz": "dev-develop"
 	},