diff --git a/composer.json b/composer.json
index 59c9414..940f55d 100644
--- a/composer.json
+++ b/composer.json
@@ -17,8 +17,8 @@
 		"issues": "https://forge.typo3.org/projects/extension-imagickimg/issues"
 	},
 	"require": {
-		"php": ">=5.3.7,<5.6",
-		"typo3/cms": ">=6.2.0,<8.0",
+		"php": ">=5.5",
+		"typo3/cms": ">=6.2.0,<10.0",
 		"ext-imagick": ">=3.1.0"
 	},
 	"conflict": {
diff --git a/ext_emconf.php b/ext_emconf.php
index bc8a409..0bef532 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -25,7 +25,7 @@
 	'constraints' =>  array(
 		'depends' => array(
 			'typo3' => '6.2.0-8.7.99',
-			'php' => '5.3.7-7.0.99',
+			'php' => '5.5.7-7.1.99',
 		),
 		'conflicts' => array(
 		),