diff --git a/composer.json b/composer.json
index af68fe77321539322ef49bf8388f21dab7b41371..12e1e34020c24870c8a25b6f90c3860fc872cd27 100644
--- a/composer.json
+++ b/composer.json
@@ -27,6 +27,7 @@
     },
     "require": {
         "php": ">=5.5",
+        "ext-curl": "*",
         "ext-SPL": "*",
         "ext-zlib": "*",
         "ext-pcre": "*",