diff --git a/package-lock.json b/package-lock.json
index 0c4855c..20b160d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1386,9 +1386,9 @@
       }
     },
     "acorn": {
-      "version": "6.2.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.1.tgz",
-      "integrity": "sha512-JD0xT5FCRDNyjDda3Lrg/IxFscp9q4tiYtxE1/nOzlKCk7hIRuYjhq1kCNkbPjMRMZuFq20HNQn1I9k8Oj0E+Q=="
+      "version": "5.7.4",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+      "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg=="
     },
     "airbnb-prop-types": {
       "version": "2.15.0",
@@ -3155,13 +3155,6 @@
       "requires": {
         "acorn": "^5.2.1",
         "defined": "^1.0.0"
-      },
-      "dependencies": {
-        "acorn": {
-          "version": "5.7.3",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
-          "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw=="
-        }
       }
     },
     "diff": {
@@ -8628,6 +8621,11 @@
         "webpack-sources": "^1.3.0"
       },
       "dependencies": {
+        "acorn": {
+          "version": "6.4.1",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+          "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA=="
+        },
         "watchpack": {
           "version": "1.6.0",
           "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-1.6.0.tgz",