diff --git a/browser/TemplateProvider.js b/browser/TemplateProvider.js
index aab3cc9..77776c6 100644
--- a/browser/TemplateProvider.js
+++ b/browser/TemplateProvider.js
@@ -39,7 +39,6 @@ module.exports = TemplateProvider;
  */
 function TemplateProvider($nunjucks) {
 	this._nunjucks = $nunjucks;
-	this._templates = {};
 }
 
 /**
@@ -49,13 +48,6 @@ function TemplateProvider($nunjucks) {
  */
 TemplateProvider.prototype._nunjucks = null;
 
-/**
- * Current set of registered templates.
- * @type {Object}
- * @private
- */
-TemplateProvider.prototype._templates = null;
-
 /**
  * Registers compiled (precompiled) Nunjucks template.
  * http://mozilla.github.io/nunjucks/api.html
@@ -63,7 +55,8 @@ TemplateProvider.prototype._templates = null;
  * @param {String} compiled Compiled template source.
  */
 TemplateProvider.prototype.registerCompiled = function (name, compiled) {
-	this._templates[name] = this._nunjucks.compile(compiled);
+	// jshint evil:true
+	eval(compiled);
 };
 
 /**
@@ -73,15 +66,14 @@ TemplateProvider.prototype.registerCompiled = function (name, compiled) {
  * @returns {*}
  */
 TemplateProvider.prototype.render = function (name, data) {
-	if (!this._templates.hasOwnProperty(name)) {
-		return Promise.reject(new Error('No such template'));
-	}
-
-	var promise;
-	try {
-		promise = Promise.resolve(this._templates[name].render(data));
-	} catch(e) {
-		promise = Promise.reject(e);
-	}
-	return promise;
+	var self = this;
+	return new Promise(function (fulfill, reject) {
+		self._nunjucks.render(name, data, function (error, html) {
+			if (error) {
+				reject(error);
+				return;
+			}
+			fulfill(html);
+		});
+	});
 };
\ No newline at end of file
diff --git a/lib/TemplateProvider.js b/lib/TemplateProvider.js
index 7862bce..967c373 100644
--- a/lib/TemplateProvider.js
+++ b/lib/TemplateProvider.js
@@ -32,15 +32,33 @@
 
 module.exports = TemplateProvider;
 
-var BrowserTemplateProvider = require('../browser/TemplateProvider'),
-    util = require('util');
-
-util.inherits(TemplateProvider, BrowserTemplateProvider);
-
 function TemplateProvider($nunjucks) {
-    BrowserTemplateProvider.call(this, $nunjucks);
+	this._nunjucks = $nunjucks;
+    this._templates = {};
+    this._compiled = {};
 }
 
+/**
+ * Current Nunjucks factory.
+ * @type {Nunjucks}
+ * @private
+ */
+TemplateProvider.prototype._nunjucks = null;
+
+/**
+ * Current set of registered templates.
+ * @type {Object}
+ * @private
+ */
+TemplateProvider.prototype._templates = null;
+
+/**
+ * Current set of compiled templates.
+ * @type {Object}
+ * @private
+ */
+TemplateProvider.prototype._compiled = null;
+
 /**
  * Compiles (precompiles) Nunjucks template.
  * http://mozilla.github.io/nunjucks/api.html
@@ -48,7 +66,42 @@ function TemplateProvider($nunjucks) {
  * @returns {String} Precompiled source (template specification).
  */
 TemplateProvider.prototype.compile = function (source, name) {
-    return this._nunjucks.precompileString(source, {
+	this._compiled[name] = new this._nunjucks.Template(source);
+	return this._nunjucks.precompileString(source, {
         name: name
     });
+};
+
+/**
+ * Registers compiled (precompiled) Nunjucks template.
+ * http://mozilla.github.io/nunjucks/api.html
+ * @param {String} name Template name.
+ * @param {String} compiled Compiled template source.
+ */
+TemplateProvider.prototype.registerCompiled = function (name, compiled) {
+	this._templates[name] = this._compiled[name];
+};
+
+/**
+ * Renders template with specified data.
+ * @param {String} name Name of template.
+ * @param {Object} data Data context for template.
+ * @returns {*}
+ */
+TemplateProvider.prototype.render = function (name, data) {
+	var self = this;
+	return new Promise(function (fulfill, reject) {
+		if (!self._templates.hasOwnProperty(name)) {
+			reject(new Error('No such template'));
+			return;
+		}
+
+		self._templates[name].render(data, function (error, html) {
+			if (error) {
+				reject(error);
+				return;
+			}
+			fulfill(html);
+		});
+	});
 };
\ No newline at end of file
diff --git a/package.json b/package.json
index 2b1578b..7dfcf5e 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
   "contributors": [],
   "main": "./index.js",
   "browser": {
-    "nunjucks": "./node_modules/nunjucks/browser/nunjucks.js",
+    "nunjucks": "./node_modules/nunjucks/browser/nunjucks-slim.js",
     "./lib/TemplateProvider.js": "./browser/TemplateProvider.js"
   },
   "repository": {