diff --git a/04-lesson/todo-app/package.json b/04-lesson/todo-app/package.json
index d3e8458..6a6ca68 100644
--- a/04-lesson/todo-app/package.json
+++ b/04-lesson/todo-app/package.json
@@ -10,7 +10,7 @@
     "errorhandler"    : "1.2.0",
     "method-override" : "2.2.0",
     "ejs-locals"      : "1.0.2",
-    "mongoose"        : "4.4.12",
+    "mongoose"        : "5.7.7",
     "morgan"          : "1.3.2",
     "serve-favicon"   : "2.1.5",
     "serve-static"    : "1.6.3"