diff --git a/src/controllers/admin/admins-mods.js b/src/controllers/admin/admins-mods.js
index 92d4a4bf20..23e013b444 100644
--- a/src/controllers/admin/admins-mods.js
+++ b/src/controllers/admin/admins-mods.js
@@ -1,52 +1,31 @@
 'use strict';
 
-var async = require('async');
+const groups = require('../../groups');
+const categories = require('../../categories');
+const privileges = require('../../privileges');
 
-var groups = require('../../groups');
-var categories = require('../../categories');
-var privileges = require('../../privileges');
+const AdminsMods = module.exports;
 
-var AdminsMods = module.exports;
+AdminsMods.get = async function (req, res) {
+	const [admins, globalMods, categories] = await Promise.all([
+		groups.get('administrators', { uid: req.uid }),
+		groups.get('Global Moderators', { uid: req.uid }),
+		getModeratorsOfCategories(req.uid),
+	]);
 
-AdminsMods.get = function (req, res, next) {
-	async.waterfall([
-		function (next) {
-			async.parallel({
-				admins: function (next) {
-					groups.get('administrators', { uid: req.uid }, next);
-				},
-				globalMods: function (next) {
-					groups.get('Global Moderators', { uid: req.uid }, next);
-				},
-				categories: function (next) {
-					getModeratorsOfCategories(req.uid, next);
-				},
-			}, next);
-		},
-		function (results) {
-			results.allPrivileges = privileges.userPrivilegeList;
-			res.render('admin/manage/admins-mods', results);
-		},
-	], next);
+	res.render('admin/manage/admins-mods', {
+		admins: admins,
+		globalMods: globalMods,
+		categories: categories,
+		allPrivileges: privileges.userPrivilegeList,
+	});
 };
 
-function getModeratorsOfCategories(uid, callback) {
-	async.waterfall([
-		function (next) {
-			categories.buildForSelect(uid, 'find', next);
-		},
-		function (categoryData, next) {
-			async.map(categoryData, function (category, next) {
-				async.waterfall([
-					function (next) {
-						categories.getModerators(category.cid, next);
-					},
-					function (moderators, next) {
-						category.moderators = moderators;
-						next(null, category);
-					},
-				], next);
-			}, next);
-		},
-	], callback);
+async function getModeratorsOfCategories(uid) {
+	const categoryData = await categories.buildForSelect(uid, 'find');
+	const moderators = await Promise.all(categoryData.map(c => categories.getModerators(c.cid)));
+	categoryData.forEach((c, index) => {
+		c.moderators = moderators[index];
+	});
+	return categoryData;
 }
diff --git a/src/controllers/admin/appearance.js b/src/controllers/admin/appearance.js
index 65256f62ad..90b143ceb9 100644
--- a/src/controllers/admin/appearance.js
+++ b/src/controllers/admin/appearance.js
@@ -1,9 +1,9 @@
 'use strict';
 
-var appearanceController = module.exports;
+const appearanceController = module.exports;
 
 appearanceController.get = function (req, res) {
-	var term = req.params.term ? req.params.term : 'themes';
+	const term = req.params.term ? req.params.term : 'themes';
 
 	res.render('admin/appearance/' + term, {});
 };
diff --git a/src/controllers/admin/blacklist.js b/src/controllers/admin/blacklist.js
index 23d66d7c8a..36a446c0aa 100644
--- a/src/controllers/admin/blacklist.js
+++ b/src/controllers/admin/blacklist.js
@@ -1,22 +1,18 @@
 'use strict';
 
-var async = require('async');
-var meta = require('../../meta');
-var analytics = require('../../analytics');
+const meta = require('../../meta');
+const analytics = require('../../analytics');
 
-var blacklistController = module.exports;
+const blacklistController = module.exports;
 
-blacklistController.get = function (req, res, next) {
-	async.parallel({
-		rules: async.apply(meta.blacklist.get),
-		analytics: async.apply(analytics.getBlacklistAnalytics),
-	}, function (err, data) {
-		if (err) {
-			return next(err);
-		}
-
-		res.render('admin/manage/ip-blacklist', Object.assign(data, {
-			title: '[[pages:ip-blacklist]]',
-		}));
+blacklistController.get = async function (req, res) {
+	const [rules, analyticsData] = await Promise.all([
+		meta.blacklist.get(),
+		analytics.getBlacklistAnalytics(),
+	]);
+	res.render('admin/manage/ip-blacklist', {
+		title: '[[pages:ip-blacklist]]',
+		rules: rules,
+		analytics: analyticsData,
 	});
 };
diff --git a/src/controllers/admin/cache.js b/src/controllers/admin/cache.js
index 2a85e6d07b..5f1a92fcde 100644
--- a/src/controllers/admin/cache.js
+++ b/src/controllers/admin/cache.js
@@ -1,23 +1,23 @@
 'use strict';
 
-var cacheController = module.exports;
+const cacheController = module.exports;
 
-var utils = require('../../utils');
+const utils = require('../../utils');
 
 cacheController.get = function (req, res) {
-	var postCache = require('../../posts/cache');
-	var groupCache = require('../../groups').cache;
-	var objectCache = require('../../database').objectCache;
-	var localCache = require('../../cache');
+	const postCache = require('../../posts/cache');
+	const groupCache = require('../../groups').cache;
+	const objectCache = require('../../database').objectCache;
+	const localCache = require('../../cache');
 
-	var avgPostSize = 0;
-	var percentFull = 0;
+	let avgPostSize = 0;
+	let percentFull = 0;
 	if (postCache.itemCount > 0) {
 		avgPostSize = parseInt((postCache.length / postCache.itemCount), 10);
 		percentFull = ((postCache.length / postCache.max) * 100).toFixed(2);
 	}
 
-	var data = {
+	const data = {
 		postCache: {
 			length: postCache.length,
 			max: postCache.max,
diff --git a/src/controllers/admin/categories.js b/src/controllers/admin/categories.js
index 73c8eb74db..e06afb24e2 100644
--- a/src/controllers/admin/categories.js
+++ b/src/controllers/admin/categories.js
@@ -1,84 +1,66 @@
 'use strict';
 
-var async = require('async');
+const categories = require('../../categories');
+const analytics = require('../../analytics');
+const plugins = require('../../plugins');
+const translator = require('../../translator');
 
-var categories = require('../../categories');
-var analytics = require('../../analytics');
-var plugins = require('../../plugins');
-var translator = require('../../translator');
+const categoriesController = module.exports;
 
-var categoriesController = module.exports;
+categoriesController.get = async function (req, res, next) {
+	const [categoryData, parent, allCategories] = await Promise.all([
+		categories.getCategories([req.params.category_id], req.uid),
+		categories.getParents([req.params.category_id]),
+		getAllCategories(req.uid),
+	]);
 
-categoriesController.get = function (req, res, callback) {
-	async.waterfall([
-		function (next) {
-			async.parallel({
-				category: async.apply(categories.getCategories, [req.params.category_id], req.uid),
-				parent: async.apply(categories.getParents, [req.params.category_id]),
-				allCategories: function (next) {
-					async.waterfall([
-						function (next) {
-							categories.getAllCidsFromSet('categories:cid', next);
-						},
-						function (cids, next) {
-							categories.getCategories(cids, req.uid, next);
-						},
-						function (categoryData, next) {
-							categoryData = categories.getTree(categoryData);
-							categories.buildForSelectCategories(categoryData, next);
-						},
-					], next);
-				},
-			}, next);
-		},
-		function (data, next) {
-			var category = data.category[0];
+	const category = categoryData[0];
+	if (!category) {
+		return next();
+	}
 
-			if (!category) {
-				return callback();
-			}
-			category.parent = data.parent[0];
-			data.allCategories.forEach(function (category) {
-				if (category) {
-					category.selected = parseInt(category.cid, 10) === parseInt(req.params.category_id, 10);
-				}
-			});
+	category.parent = parent[0];
+	allCategories.forEach(function (category) {
+		if (category) {
+			category.selected = parseInt(category.cid, 10) === parseInt(req.params.category_id, 10);
+		}
+	});
 
-			plugins.fireHook('filter:admin.category.get', {
-				req: req,
-				res: res,
-				category: category,
-				customClasses: [],
-				allCategories: data.allCategories,
-			}, next);
-		},
-		function (data) {
-			data.category.name = translator.escape(String(data.category.name));
+	const data = await plugins.fireHook('filter:admin.category.get', {
+		req: req,
+		res: res,
+		category: category,
+		customClasses: [],
+		allCategories: allCategories,
+	});
+	data.category.name = translator.escape(String(data.category.name));
 
-			res.render('admin/manage/category', {
-				category: data.category,
-				allCategories: data.allCategories,
-				customClasses: data.customClasses,
-			});
-		},
-	], callback);
+	res.render('admin/manage/category', {
+		category: data.category,
+		allCategories: data.allCategories,
+		customClasses: data.customClasses,
+	});
 };
 
+async function getAllCategories(uid) {
+	const cids = await categories.getAllCidsFromSet('categories:cid');
+	const categoryData = await categories.getCategories(cids, uid);
+	const tree = categories.getTree(categoryData);
+	return await categories.buildForSelectCategories(tree);
+}
+
 categoriesController.getAll = function (req, res) {
 	// Categories list will be rendered on client side with recursion, etc.
 	res.render('admin/manage/categories', {});
 };
 
-categoriesController.getAnalytics = function (req, res, next) {
-	async.waterfall([
-		function (next) {
-			async.parallel({
-				name: async.apply(categories.getCategoryField, req.params.category_id, 'name'),
-				analytics: async.apply(analytics.getCategoryAnalytics, req.params.category_id),
-			}, next);
-		},
-		function (data) {
-			res.render('admin/manage/category-analytics', data);
-		},
-	], next);
+categoriesController.getAnalytics = async function (req, res) {
+	const [name, analyticsData] = await Promise.all([
+		categories.getCategoryField(req.params.category_id, 'name'),
+		analytics.getCategoryAnalytics(req.params.category_id),
+	]);
+	res.render('admin/manage/category-analytics', {
+		name: name,
+		analytics: analyticsData,
+	});
 };