diff --git a/visualization/dash/avocado_analytics/apps/app_4/requirements.txt b/visualization/dash/avocado_analytics/apps/app_4/requirements.txt
index d25846c..8acb05e 100644
--- a/visualization/dash/avocado_analytics/apps/app_4/requirements.txt
+++ b/visualization/dash/avocado_analytics/apps/app_4/requirements.txt
@@ -1,3 +1,3 @@
-dash==1.13.3
+dash==2.15.0
 pandas==1.0.5
 gunicorn==20.0.4