diff --git a/package-lock.json b/package-lock.json
index b2c91db..a0ecaa3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1073,10 +1073,9 @@
             }
         },
         "acorn": {
-            "version": "6.1.1",
-            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
-            "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA==",
-            "dev": true
+            "version": "6.4.2",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.2.tgz",
+            "integrity": "sha512-XtGIhXwF8YM8bJhGxG5kXgjkEuNGLTkoYqVE+KMR+aspr4KGYmKYg7yUe3KghyQ9yheNwLnjmzh/7+gfDBmHCQ=="
         },
         "acorn-jsx": {
             "version": "5.0.1",
@@ -9833,11 +9832,6 @@
                 "webpack-sources": "^1.4.1"
             },
             "dependencies": {
-                "acorn": {
-                    "version": "6.2.1",
-                    "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.1.tgz",
-                    "integrity": "sha512-JD0xT5FCRDNyjDda3Lrg/IxFscp9q4tiYtxE1/nOzlKCk7hIRuYjhq1kCNkbPjMRMZuFq20HNQn1I9k8Oj0E+Q=="
-                },
                 "ajv": {
                     "version": "6.10.2",
                     "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.2.tgz",