diff --git a/package-lock.json b/package-lock.json
index e615535..9fdd38c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -496,9 +496,9 @@
       }
     },
     "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
     },
     "acorn-globals": {
@@ -512,9 +512,9 @@
       },
       "dependencies": {
         "acorn": {
-          "version": "6.1.1",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
-          "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA==",
+          "version": "6.4.1",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+          "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
           "dev": true
         }
       }
@@ -2944,7 +2944,7 @@
         },
         "get-stream": {
           "version": "3.0.0",
-          "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
           "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=",
           "dev": true
         },
@@ -3166,7 +3166,7 @@
         },
         "strip-eof": {
           "version": "1.0.0",
-          "resolved": "http://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
           "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=",
           "dev": true
         },
@@ -3187,7 +3187,7 @@
         },
         "wrap-ansi": {
           "version": "2.1.0",
-          "resolved": "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
           "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
           "dev": true,
           "requires": {
@@ -3223,7 +3223,7 @@
             },
             "strip-ansi": {
               "version": "3.0.1",
-              "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+              "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
               "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
               "dev": true,
               "requires": {
@@ -3246,7 +3246,7 @@
         },
         "yargs": {
           "version": "11.1.0",
-          "resolved": "http://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
           "integrity": "sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==",
           "dev": true,
           "requires": {