diff --git a/composer.json b/composer.json
index b74e571..9841fe3 100644
--- a/composer.json
+++ b/composer.json
@@ -20,6 +20,9 @@
         "zendframework/zend-stdlib": "self.version",
         "zendframework/zendxml": "1.*"
     },
+    "suggest": {
+        "zendframework/zend-cache": "To support Zend\\XmlRpc\\Server\\Cache usage"
+    },
     "extra": {
         "branch-alias": {
             "dev-master": "2.3-dev",