diff --git a/composer.json b/composer.json
index 04acfff..0e7562c 100755
--- a/composer.json
+++ b/composer.json
@@ -14,5 +14,11 @@
         "fingerprint",
         "hash",
         "cache-bust"
-    ]
+    ],
+    "require": {
+        "getkirby/composer-installer": "^1.1"
+    },
+    "config": {
+        "optimize-autoloader": true
+    }
 }