diff --git a/composer.json b/composer.json
index bd7fc45..f3ca781 100644
--- a/composer.json
+++ b/composer.json
@@ -10,6 +10,7 @@
         }
     ],
     "require": {
+        "ext-curl": "*",
         "kbsali/redmine-api": "^2.7"
     },
     "require-dev": {