diff --git a/modules/components/tag-input/tag-input.ts b/modules/components/tag-input/tag-input.ts
index 8a572ec4..6d0749a0 100644
--- a/modules/components/tag-input/tag-input.ts
+++ b/modules/components/tag-input/tag-input.ts
@@ -25,7 +25,8 @@ import {
 } from '@angular/forms';
 
 // rx
-import { Observable, debounceTime, filter, map, first } from 'rxjs';
+import { Observable } from 'rxjs';
+import { debounceTime, filter, map, first } from 'rxjs/operators';
 
 // ng2-tag-input
 import { TagInputAccessor } from '../../core/accessor';
diff --git a/package.json b/package.json
index 5be91a86..01753311 100644
--- a/package.json
+++ b/package.json
@@ -10,8 +10,12 @@
     "start": "npm run server",
     "test": "ng test modules --browsers=ChromeHeadless --watch=false",
     "codecov": "ng test modules --code-coverage --browsers=ChromeHeadless --watch=false",
-    "ng": "ng"
+    "ng": "ng",
+    "prepare": "npm run build"
   },
+  "files": [
+    "dist/*"
+  ],
   "author": {
     "name": "Giancarlo Buomprisco",
     "email": "giancarlopsk@gmail.com"