diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index d46d28eb88..a60e673b64 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -36,7 +36,7 @@
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-          "resolved": "http://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
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-      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
-      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.2.tgz",
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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@@ -688,7 +688,7 @@
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-          "resolved": "http://registry.npmjs.org/yargs/-/yargs-1.3.3.tgz",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-1.3.3.tgz",
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-          "resolved": "http://registry.npmjs.org/rimraf/-/rimraf-2.0.3.tgz",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.0.3.tgz",
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-          "resolved": "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
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-          "resolved": "http://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
+          "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
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@@ -1891,7 +1891,7 @@
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-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-4.13.1.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.13.1.tgz",
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-          "resolved": "http://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
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@@ -2065,9 +2065,15 @@
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+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+          "dev": true
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
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-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-4.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.3.0.tgz",
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@@ -2229,9 +2241,15 @@
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+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+          "dev": true
+        },
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-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-4.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.3.0.tgz",
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@@ -3120,7 +3138,7 @@
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-          "resolved": "http://registry.npmjs.org/debug/-/debug-0.7.4.tgz",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-0.7.4.tgz",
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@@ -3231,7 +3249,7 @@
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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@@ -3943,7 +3961,7 @@
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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@@ -4845,7 +4863,7 @@
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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-          "resolved": "http://registry.npmjs.org/autoprefixer/-/autoprefixer-7.2.6.tgz",
+          "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-7.2.6.tgz",
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-              "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+              "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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-              "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+              "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
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-          "resolved": "http://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
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@@ -5771,7 +5789,7 @@
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-      "resolved": "http://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
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diff --git a/package.json b/package.json
index 6e20b6c954..4acc7c67c3 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
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   "description": "Moodle",
   "devDependencies": {
-    "async": "1.5.2",
+    "async": "3.2.2",
     "eslint": "4.6.1",
     "eslint-plugin-promise": "3.5.0",
     "gherkin-lint": "1.1.3",