diff --git a/WebApp/package-lock.json b/WebApp/package-lock.json
index bb85f4d..580c2bd 100644
--- a/WebApp/package-lock.json
+++ b/WebApp/package-lock.json
@@ -2422,11 +2422,11 @@
       "integrity": "sha1-KhFLUdKm7J5tg8+AP4OKh42KAjo="
     },
     "moment-timezone": {
-      "version": "0.2.5",
-      "resolved": "https://registry.npmjs.org/moment-timezone/-/moment-timezone-0.2.5.tgz",
-      "integrity": "sha1-mdelTpvlC7H55AkWk97DynKbLfI=",
+      "version": "0.5.31",
+      "resolved": "https://registry.npmjs.org/moment-timezone/-/moment-timezone-0.5.31.tgz",
+      "integrity": "sha512-+GgHNg8xRhMXfEbv81iDtrVeTcWt0kWmTEY1XQK14dICTXnWJnT0dxdlPspwqF3keKMVPXwayEsk1DI0AA/jdA==",
       "requires": {
-        "moment": "2.21.0"
+        "moment": ">= 2.9.0"
       }
     },
     "mongodb": {
diff --git a/WebApp/package.json b/WebApp/package.json
index 4cb65bd..67f7fd5 100644
--- a/WebApp/package.json
+++ b/WebApp/package.json
@@ -14,7 +14,7 @@
     "favicon": "0.0.2",
     "fs": "0.0.1-security",
     "moment": "^2.21.0",
-    "moment-timezone": "^0.2.5",
+    "moment-timezone": "^0.5.31",
     "mongodb": "^3.1.13",
     "mongoose": "5.8.7",
     "passport": "0.2.0",