diff --git a/composer.json b/composer.json
index 4581eda1f4d735f0fdd86f9f0234a3c23a885571..779bbf5565225840faf9e646bb09f6d9f8f13692 100644
--- a/composer.json
+++ b/composer.json
@@ -22,13 +22,13 @@
     ],
     "require": {
         "php": ">=5.4",
-        "symfony/symfony": "~2.6",
+        "symfony/symfony": "~2.8|~3.0",
         "doctrine/orm": "~2.2,>=2.2.3",
         "doctrine/doctrine-bundle": "~1.2",
         "symfony/assetic-bundle": "~2.3",
-        "symfony/monolog-bundle": "~2.4",
+        "symfony/monolog-bundle": "~2.4|~3.0",
         "sensio/framework-extra-bundle": "~3.0",
-        "irstea/theme-bundle": "~1.5",
+        "irstea/theme-bundle": "^1.5|^2.0",
         "knplabs/knp-gaufrette-bundle": "~0.1",
         "ramsey/uuid": "~2.8",
         "blueimp/jquery-file-upload": "~9.9",
@@ -53,7 +53,8 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "0.1-dev"
+            "dev-master": "0.1-dev",
+            "dev-symfony3": "1.0.x-dev"
         }
     },
     "archive": {