diff --git a/packages/app/package.json b/packages/app/package.json
index 465674c4..492ad044 100755
--- a/packages/app/package.json
+++ b/packages/app/package.json
@@ -90,6 +90,7 @@
     "react-reveal": "1.2.2",
     "react-rnd": "10.3.5",
     "react-ticker": "^1.3.2",
+    "react-transition-group": "^4.4.5",
     "remark-gfm": "^3.0.1",
     "rxjs": "^7.5.5",
     "store": "^2.0.12",