diff --git a/package.json b/package.json
index aa6b365..314f4f8 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,6 @@
     "protractor": "~5.1.2",
     "ts-node": "~4.1.0",
     "tslint": "~5.9.1",
-    "typescript": "~2.5.3",
-    "typescript-string-enums": "^0.3.5"
+    "typescript": "~2.5.3"
   }
 }
diff --git a/src/packages/discovery/store/notification/notification.action.ts b/src/packages/discovery/store/notification/notification.action.ts
index 52b43ac..179b7f5 100644
--- a/src/packages/discovery/store/notification/notification.action.ts
+++ b/src/packages/discovery/store/notification/notification.action.ts
@@ -1,7 +1,5 @@
 import { Action } from '@ngrx/store';
 
-import { Enum } from 'typescript-string-enums';
-
 import { notificationActionEnum } from 'packages/core/rpc/store/notification';
 import { RPCError } from 'packages/core/rpc/error';