diff --git a/package-lock.json b/package-lock.json
index c5ae5e0..61cc537 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,9 +10,9 @@
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     },
     "acorn": {
-      "version": "6.0.2",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.0.2.tgz",
-      "integrity": "sha512-GXmKIvbrN3TV7aVqAzVFaMW8F8wzVX7voEBRO3bDA64+EX37YSayggRJP5Xig6HYHBkWKpFg9W5gg6orklubhg=="
+      "version": "6.4.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+      "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA=="
     },
     "acorn-globals": {
       "version": "4.3.0",