diff --git a/plugins/kolab_core/README.txt b/plugins/kolab_core/README.txt
index 3b82e898..81ef3d78 100644
--- a/plugins/kolab_core/README.txt
+++ b/plugins/kolab_core/README.txt
@@ -21,7 +21,7 @@ pear install Net_SMTP
 pear install Mail_mimeDecode
 pear install Auth_SASL
 pear install Date
-
+pear install HTTP_Request
 
 Configuration
 -------------