diff --git a/package-lock.json b/package-lock.json
index d0455de..916cf24 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -210,7 +210,7 @@
     },
     "async": {
       "version": "1.5.2",
-      "resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
       "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
       "dev": true
     },
@@ -1354,7 +1354,7 @@
     },
     "http-errors": {
       "version": "1.6.3",
-      "resolved": "http://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
       "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
       "dev": true,
       "requires": {
@@ -1621,9 +1621,9 @@
       "dev": true
     },
     "js-yaml": {
-      "version": "3.12.0",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.12.0.tgz",
-      "integrity": "sha512-PIt2cnwmPfL4hKNwqeiuz4bKfnzHTBv6HyVgjahA6mPLwPDzjDWrplJBMjHUFxku/N3FlmrbyPclad+I+4mJ3A==",
+      "version": "3.13.1",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.1.tgz",
+      "integrity": "sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==",
       "dev": true,
       "requires": {
         "argparse": "^1.0.7",
@@ -2355,7 +2355,7 @@
     },
     "resolve": {
       "version": "1.1.7",
-      "resolved": "http://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
       "integrity": "sha1-IDEU2CrSxe2ejgQRs5ModeiJ6Xs=",
       "dev": true
     },
@@ -2516,7 +2516,7 @@
     },
     "source-map": {
       "version": "0.2.0",
-      "resolved": "http://registry.npmjs.org/source-map/-/source-map-0.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.2.0.tgz",
       "integrity": "sha1-2rc/vPwrqBm03gO9b26qSBZLP50=",
       "dev": true,
       "optional": true,
@@ -2669,7 +2669,7 @@
         },
         "superagent": {
           "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/superagent/-/superagent-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/superagent/-/superagent-2.3.0.tgz",
           "integrity": "sha1-cDUpoHFOV+EjlZ3e+84ZOy5Q0RU=",
           "dev": true,
           "requires": {
@@ -2687,7 +2687,7 @@
         },
         "supertest": {
           "version": "2.0.1",
-          "resolved": "http://registry.npmjs.org/supertest/-/supertest-2.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/supertest/-/supertest-2.0.1.tgz",
           "integrity": "sha1-oFgIHXiPFRXUcA11Aogea3WeRM0=",
           "dev": true,
           "requires": {