diff --git a/UI/package.json b/UI/package.json
index b31495d..4eca34f 100644
--- a/UI/package.json
+++ b/UI/package.json
@@ -11,6 +11,7 @@
     "radium": "^0.19.6",
     "react": "^16.2.0",
     "react-dom": "^16.2.0",
+    "react-immutable-proptypes": "^2.1.0",
     "react-redux": "^5.0.6",
     "react-router": "^4.2.0",
     "react-router-dom": "^4.2.2",
diff --git a/UI/yarn.lock b/UI/yarn.lock
index 8f7f055..894da22 100644
--- a/UI/yarn.lock
+++ b/UI/yarn.lock
@@ -6088,6 +6088,10 @@ react-error-overlay@^1.0.10:
     settle-promise "1.0.0"
     source-map "0.5.6"
 
+react-immutable-proptypes@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/react-immutable-proptypes/-/react-immutable-proptypes-2.1.0.tgz#023d6f39bb15c97c071e9e60d00d136eac5fa0b4"
+
 react-json-tree@^0.11.0:
   version "0.11.0"
   resolved "https://registry.yarnpkg.com/react-json-tree/-/react-json-tree-0.11.0.tgz#f5b17e83329a9c76ae38be5c04fda3a7fd684a35"