diff --git a/package-lock.json b/package-lock.json
index 716bded..91650a9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1390,9 +1390,9 @@
             }
         },
         "acorn": {
-            "version": "6.0.5",
-            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.0.5.tgz",
-            "integrity": "sha512-i33Zgp3XWtmZBMNvCr4azvOFeWVw1Rk6p3hfi3LUDvIFraOMywb1kAtrbi+med14m4Xfpqm3zRZMT+c0FNE7kg==",
+            "version": "6.4.1",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+            "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
             "dev": true
         },
         "acorn-globals": {
@@ -6321,9 +6321,9 @@
             },
             "dependencies": {
                 "acorn": {
-                    "version": "5.7.3",
-                    "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
-                    "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==",
+                    "version": "5.7.4",
+                    "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+                    "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==",
                     "dev": true
                 },
                 "jsdom": {
@@ -11840,12 +11840,6 @@
                 "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==",
-                    "dev": true
-                },
                 "ajv": {
                     "version": "6.10.2",
                     "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.2.tgz",