diff --git a/src/Symfony/Component/Intl/composer.json b/src/Symfony/Component/Intl/composer.json
index d76625e6b2..29eedfa1f9 100644
--- a/src/Symfony/Component/Intl/composer.json
+++ b/src/Symfony/Component/Intl/composer.json
@@ -25,7 +25,7 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/icu": "~1.0"
+        "symfony/icu": "~1.0-RC"
     },
     "require-dev": {
         "symfony/filesystem": ">=2.1"