diff --git a/composer.json b/composer.json
index e94600b..71f4267 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
     ],
     "require": {
         "php": ">=5.3.2",
-        "payum/core": "0.7.*"
+        "payum/core": "0.8.*@dev"
     },
     "require-dev": {
         "phpunit/phpunit": "3.7.*"
@@ -35,7 +35,7 @@
     "target-dir": "Payum/Paypal/Ipn",
     "extra": {
         "branch-alias": {
-            "dev-master": "0.7-dev"
+            "dev-master": "0.8-dev"
         }
     }
 }
\ No newline at end of file