diff --git a/elm.json b/elm.json
index 2854955..1dffa95 100644
--- a/elm.json
+++ b/elm.json
@@ -27,6 +27,7 @@
     },
     "test-dependencies": {
         "elm/html": "1.0.0 <= v < 2.0.0",
-        "elm-explorations/test": "2.0.0 <= v < 3.0.0"
+        "elm-explorations/test": "2.0.0 <= v < 3.0.0",
+        "elm/random": "1.0.0 <= v < 2.0.0"
     }
 }