diff --git a/package.json b/package.json
index 69a6ceb..6e0bcd7 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "cscb.comboboxes",
     "version": "0.1.0",
     "dependencies": {
-        "express": "~3.4.3"
+        "express": "~4.17.1"
     },
     "devDependencies": {
         "grunt": "~0.4.1",