diff --git a/lib/ui/package.json b/lib/ui/package.json
index 0d232ae4f93..257a57ea508 100644
--- a/lib/ui/package.json
+++ b/lib/ui/package.json
@@ -27,6 +27,7 @@
     "prepare": "node ../../scripts/prepare.js"
   },
   "dependencies": {
+    "@emotion/core": "^10.0.20",
     "@storybook/addons": "5.3.0-alpha.33",
     "@storybook/api": "5.3.0-alpha.33",
     "@storybook/channels": "5.3.0-alpha.33",