diff --git a/composer.json b/composer.json
index 98069c3..aaae951 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,8 @@
     "d3",
     "import",
     "demodata",
-    "csv"
+    "csv",
+    "testing"
   ],
   "authors": [
     {