diff --git a/composer.json b/composer.json
index 47e0c6a..4a85f6a 100644
--- a/composer.json
+++ b/composer.json
@@ -14,6 +14,7 @@
         "psr-0": { "Basho": "src/" }
     },
     "require": {
-        "php": ">=5.3.0"
+        "php": ">=5.3.0",
+        "ext-curl": "*"
     }
 }