diff --git a/composer.json b/composer.json
index b52b11967..7d2121af3 100644
--- a/composer.json
+++ b/composer.json
@@ -31,8 +31,11 @@
             "App\\": "tests/app/src/"
         }
     },
+    "minimum-stability": "dev",
+    "prefer-stable": true,
     "require": {
         "champs-libres/async-uploader-bundle": "dev-sf4",
+        "champs-libres/wopi-bundle": "dev-master",
         "graylog2/gelf-php": "^1.5",
         "symfony/form": "4.*",
         "symfony/twig-bundle": "^4.4",