diff --git a/graphviz-rough/package-lock.json b/graphviz-rough/package-lock.json
index 31c5584c..ca25764c 100644
--- a/graphviz-rough/package-lock.json
+++ b/graphviz-rough/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "graphviz-rough",
-  "version": "0.18.0",
+  "version": "0.18.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -5426,9 +5426,9 @@
       "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": {