diff --git a/package-lock.json b/package-lock.json
index 2ca71b6..cd96f77 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -59,12 +59,13 @@
       "version": "1.0.9",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.0.9.tgz",
       "integrity": "sha1-kbR5JYinc4wl813W9jdSovh3YTU=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "acorn": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.0.tgz",
-      "integrity": "sha512-kL5CuoXA/dgxlBbVrflsflzQ3PAas7RYZB52NOm/6839iVYJgKMJ3cQJD+t2i5+qFa8h3MDpEOJiS64E8JLnSQ==",
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
+      "integrity": "sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg==",
       "dev": true
     },
     "amdefine": {
@@ -294,7 +295,8 @@
           "version": "2.7.3",
           "resolved": "https://registry.npmjs.org/esprima/-/esprima-2.7.3.tgz",
           "integrity": "sha1-luO3DVd59q1JzQMmc9HDEnZ7pYE=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "estraverse": {
           "version": "1.9.3",
@@ -381,7 +383,8 @@
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
           "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -423,7 +426,8 @@
       "version": "0.0.8",
       "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
       "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "mkdirp": {
       "version": "0.5.1",
@@ -472,6 +476,7 @@
       "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
       "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
       "dev": true,
+      "optional": true,
       "requires": {
         "wrappy": "1"
       }
@@ -503,7 +508,8 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
       "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "qunitjs": {
       "version": "2.1.1",
@@ -560,6 +566,7 @@
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
       "dev": true,
+      "optional": true,
       "requires": {
         "prelude-ls": "~1.1.2"
       }
@@ -602,7 +609,8 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
+      "dev": true,
+      "optional": true
     }
   }
 }