diff --git a/package-lock.json b/package-lock.json
index ec127e9..1be2e30 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -263,9 +263,9 @@
       "dev": true
     },
     "acorn": {
-      "version": "6.0.3",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.0.3.tgz",
-      "integrity": "sha512-xEnlTS2J0PKuub0pd2Y4W58iEo1sfRZ3h23E8AKmlnV8Nc6E/syRdVeo0DMuLSrgRJZHnFeDou2llXfB+wb1/A==",
+      "version": "6.4.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+      "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
       "dev": true
     },
     "acorn-jsx": {