diff --git a/web_server/package.json b/web_server/package.json
index a4f550f2..7f34835f 100644
--- a/web_server/package.json
+++ b/web_server/package.json
@@ -26,7 +26,7 @@
     "cookie-parser": "^1.4.5",
     "d3": "^5.9.1",
     "d3-scale-chromatic": "^1.3.3",
-    "debug": "4.3.1",
+    "debug": "4.4.0",
     "ejs": "^3.1.7",
     "escape-string-regexp": "^1.0.5",
     "express": "^4.16.4",