diff --git a/package-lock.json b/package-lock.json
index 47ac8a1..b068b64 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2036,9 +2036,9 @@
       }
     },
     "acorn": {
-      "version": "5.7.3",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
-      "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==",
+      "version": "6.1.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
+      "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA==",
       "dev": true
     },
     "acorn-dynamic-import": {
@@ -9474,6 +9474,14 @@
         "whatwg-url": "^6.4.1",
         "ws": "^5.2.0",
         "xml-name-validator": "^3.0.0"
+      },
+      "dependencies": {
+        "acorn": {
+          "version": "5.7.3",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
+          "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==",
+          "dev": true
+        }
       }
     },
     "jsesc": {
diff --git a/package.json b/package.json
index dc01e9a..a3d5410 100644
--- a/package.json
+++ b/package.json
@@ -7,6 +7,7 @@
     "lodash": "^4.17.11"
   },
   "devDependencies": {
+    "acorn": "^6.1.1",
     "babel-jest": "^24.8.0",
     "babel-preset-jaid": "^6.2.0",
     "caniuse-lite": "^1.0.30000969",