diff --git a/package.json b/package.json
index a6807e34..a6cdc2de 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,8 @@
     "ember-cli-babel": "^6.0.0",
     "ember-cli-htmlbars": "^1.2.0",
     "ember-cli-sass": "^6.1.2",
-    "ember-popper": "^0.0.3"
+    "ember-popper": "^0.0.3",
+    "ember-truth-helpers": "^1.3.0"
   },
   "devDependencies": {
     "@html-next/flexi-config": "^2.0.0-rc.1",