diff --git a/demo/package-lock.json b/demo/package-lock.json
index 2ffab1e..bec5563 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -5283,8 +5283,7 @@
             "promise-inflight": "^1.0.1",
             "rimraf": "^2.6.2",
             "ssri": "^5.2.4",
-            "unique-filename": "^1.1.0",
-            "y18n": "^4.0.0"
+            "unique-filename": "^1.1.0"
           },
           "dependencies": {
             "glob": {
@@ -8041,8 +8040,7 @@
                 "promise-inflight": "^1.0.1",
                 "rimraf": "^2.6.3",
                 "ssri": "^6.0.1",
-                "unique-filename": "^1.1.1",
-                "y18n": "^4.0.0"
+                "unique-filename": "^1.1.1"
               },
               "dependencies": {
                 "glob": {
@@ -9736,8 +9734,7 @@
                 "promise-inflight": "^1.0.1",
                 "rimraf": "^2.6.3",
                 "ssri": "^6.0.1",
-                "unique-filename": "^1.1.1",
-                "y18n": "^4.0.0"
+                "unique-filename": "^1.1.1"
               }
             },
             "find-cache-dir": {
@@ -10563,11 +10560,6 @@
           "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
           "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ=="
         },
-        "y18n": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
-          "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w=="
-        },
         "yallist": {
           "version": "2.1.2",
           "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
@@ -10588,7 +10580,6 @@
             "set-blocking": "^2.0.0",
             "string-width": "^2.0.0",
             "which-module": "^2.0.0",
-            "y18n": "^3.2.1 || ^4.0.0",
             "yargs-parser": "^11.1.1"
           },
           "dependencies": {
@@ -14121,9 +14112,9 @@
       "dev": true
     },
     "y18n": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
-      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.1.tgz",
+      "integrity": "sha512-wNcy4NvjMYL8gogWWYAO7ZFWFfHcbdbE57tZO8e4cbpj8tfUcwrwqSl3ad8HxpYWCdXcJUCeKKZS62Av1affwQ==",
       "dev": true
     },
     "yallist": {