diff --git a/package-lock.json b/package-lock.json
index 0661576..d5f9aff 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -384,9 +384,9 @@
 			"dev": true
 		},
 		"acorn": {
-			"version": "6.1.1",
-			"resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
-			"integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA==",
+			"version": "6.4.2",
+			"resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.2.tgz",
+			"integrity": "sha512-XtGIhXwF8YM8bJhGxG5kXgjkEuNGLTkoYqVE+KMR+aspr4KGYmKYg7yUe3KghyQ9yheNwLnjmzh/7+gfDBmHCQ==",
 			"dev": true
 		},
 		"acorn-jsx": {
@@ -6568,14 +6568,6 @@
 				"terser-webpack-plugin": "^1.1.0",
 				"watchpack": "^1.5.0",
 				"webpack-sources": "^1.3.0"
-			},
-			"dependencies": {
-				"acorn": {
-					"version": "6.2.1",
-					"resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.1.tgz",
-					"integrity": "sha512-JD0xT5FCRDNyjDda3Lrg/IxFscp9q4tiYtxE1/nOzlKCk7hIRuYjhq1kCNkbPjMRMZuFq20HNQn1I9k8Oj0E+Q==",
-					"dev": true
-				}
 			}
 		},
 		"webpack-cli": {