diff --git a/composer.json b/composer.json
index b9b807f..2ae8e68 100644
--- a/composer.json
+++ b/composer.json
@@ -21,6 +21,9 @@
         "symfony/symfony": "~2.8 || ~3.0",
         "phpunit/phpunit": "~4.8 || ~5.0"
     },
+    "conflict": {
+        "liip/theme-bundle": "1.6.0"
+    },
     "autoload": {
         "psr-4": {
             "Sulu\\Bundle\\ThemeBundle\\": ""