diff --git a/web3.js/package-lock.json b/web3.js/package-lock.json
index 46505cdd9c..910fefc1ce 100644
--- a/web3.js/package-lock.json
+++ b/web3.js/package-lock.json
@@ -4206,9 +4206,9 @@
       }
     },
     "acorn": {
-      "version": "6.2.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
-      "integrity": "sha512-8oe72N3WPMjA+2zVG71Ia0nXZ8DpQH+QyyHO+p06jT8eg8FGG3FbcUIi8KziHlAfheJQZeoqbvq1mQSQHXKYLw==",
+      "version": "6.2.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.1.tgz",
+      "integrity": "sha512-JD0xT5FCRDNyjDda3Lrg/IxFscp9q4tiYtxE1/nOzlKCk7hIRuYjhq1kCNkbPjMRMZuFq20HNQn1I9k8Oj0E+Q==",
       "dev": true
     },
     "acorn-globals": {