diff --git a/composer.json b/composer.json
index 30593b4..e4bd929 100644
--- a/composer.json
+++ b/composer.json
@@ -13,6 +13,9 @@
         "phpstan/phpstan": "^1.11"
     },
     "suggest": {
+        "ext-memcache": "Support for the Index\\Cache\\Memcached namespace (only if you can't use ext-memcached for some reason).",
+        "ext-memcached": "Support for the Index\\Cache\\Memcached namespace (you should use this instead of ext-memcache).",
+        "ext-redis": "Support for the Index\\Cache\\Valkey namespace.",
         "ext-mysqli": "Support for the Index\\Db\\MariaDb namespace (both mysqlnd and libmysql are supported).",
         "ext-sqlite3": "Support for the Index\\Db\\Sqlite namespace."
     },