diff --git a/package-lock.json b/package-lock.json
index 3730967..028240a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1501,9 +1501,9 @@
       }
     },
     "acorn": {
-      "version": "6.4.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.0.tgz",
-      "integrity": "sha512-gac8OEcQ2Li1dxIEWGZzsp2BitJxwkwcOm0zHAJLcPJaVvm58FRnk6RkuLRpU1EujipU2ZFODv2P9DLMfnV8mw=="
+      "version": "6.4.2",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.2.tgz",
+      "integrity": "sha512-XtGIhXwF8YM8bJhGxG5kXgjkEuNGLTkoYqVE+KMR+aspr4KGYmKYg7yUe3KghyQ9yheNwLnjmzh/7+gfDBmHCQ=="
     },
     "adjust-sourcemap-loader": {
       "version": "2.0.0",
@@ -4638,11 +4638,6 @@
             "negotiator": "0.6.2"
           }
         },
-        "acorn": {
-          "version": "6.4.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.0.tgz",
-          "integrity": "sha512-gac8OEcQ2Li1dxIEWGZzsp2BitJxwkwcOm0zHAJLcPJaVvm58FRnk6RkuLRpU1EujipU2ZFODv2P9DLMfnV8mw=="
-        },
         "aes-js": {
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.0.0.tgz",
@@ -12028,7 +12023,6 @@
             "@webassemblyjs/helper-module-context": "1.8.5",
             "@webassemblyjs/wasm-edit": "1.8.5",
             "@webassemblyjs/wasm-parser": "1.8.5",
-            "acorn": "^6.2.1",
             "ajv": "^6.10.2",
             "ajv-keywords": "^3.4.1",
             "chrome-trace-event": "^1.0.2",