diff --git a/package-lock.json b/package-lock.json
index a49bbba..8a526a3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28,9 +28,9 @@
       "integrity": "sha512-sMHdXLccscaxI+Hlzz58yLQue3lQyXP+6aQniDRi5oju3n0123kcjhicVGF20WF7cHiwJ2vxMbXc4skOclosoA=="
     },
     "acorn": {
-      "version": "6.2.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
-      "integrity": "sha512-8oe72N3WPMjA+2zVG71Ia0nXZ8DpQH+QyyHO+p06jT8eg8FGG3FbcUIi8KziHlAfheJQZeoqbvq1mQSQHXKYLw=="
+      "version": "6.4.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+      "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA=="
     },
     "acorn-jsx": {
       "version": "5.0.1",