diff --git a/CHANGE.md b/CHANGE.md
index 6558459..971ea91 100644
--- a/CHANGE.md
+++ b/CHANGE.md
@@ -1,3 +1,9 @@
+version 1.4.0
+=============
+**Date:** 25-Jan-2015
+
+- (bug #12): Fix directory separator for assets path in setLanguage.
+
 version 1.3.0
 =============
 **Date:** 12-Jan-2015
diff --git a/DateTimePicker.php b/DateTimePicker.php
index 6f3f440..0dd5a1f 100644
--- a/DateTimePicker.php
+++ b/DateTimePicker.php
@@ -4,7 +4,7 @@
  * @copyright Copyright © Kartik Visweswaran, Krajee.com, 2014
  * @package yii2-widgets
  * @subpackage yii2-widget-datetimepicker
- * @version 1.3.0
+ * @version 1.4.0
  */
 
 namespace kartik\datetime;
@@ -101,7 +101,8 @@ public function init()
             throw new InvalidConfigException("Invalid value for the property 'type'. Must be an integer between 1 and 5.");
         }
         $this->initI18N();
-        $this->setLanguage('bootstrap-datetimepicker.', __DIR__ . '/assets/');
+        $s = DIRECTORY_SEPARATOR;
+        $this->setLanguage('bootstrap-datetimepicker.', __DIR__ . "{$s}assets{$s}");
         $this->parseDateFormat('datetime');
         $this->_id = ($this->type == self::TYPE_INPUT) ? 'jQuery("#' . $this->options['id'] . '")' : 'jQuery("#' . $this->options['id'] . '").parent()';
         $this->registerAssets();
diff --git a/DateTimePickerAsset.php b/DateTimePickerAsset.php
index b9bc818..2265f46 100644
--- a/DateTimePickerAsset.php
+++ b/DateTimePickerAsset.php
@@ -4,7 +4,7 @@
  * @copyright Copyright © Kartik Visweswaran, Krajee.com, 2014
  * @package yii2-widgets
  * @subpackage yii2-widget-datetimepicker
- * @version 1.3.0
+ * @version 1.4.0
  */
 
 namespace kartik\datetime;
diff --git a/README.md b/README.md
index c69c276..e028244 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ to the ```require``` section of your `composer.json` file.
 
 ## Latest Release
 
-> NOTE: The latest version of the module is v1.3.0 released on 12-Jan-2015. Refer the [CHANGE LOG](https://github.com/kartik-v/yii2-widget-datetimepicker/blob/master/CHANGE.md) for details.
+> NOTE: The latest version of the module is v1.4.0. Refer the [CHANGE LOG](https://github.com/kartik-v/yii2-widget-datetimepicker/blob/master/CHANGE.md) for details.
 
 ## Demo
 
diff --git a/assets/css/datetimepicker-kv.css b/assets/css/datetimepicker-kv.css
index 4c44d1f..a3619a2 100644
--- a/assets/css/datetimepicker-kv.css
+++ b/assets/css/datetimepicker-kv.css
@@ -2,7 +2,7 @@
  * @copyright Copyright © Kartik Visweswaran, Krajee.com, 2014
  * @package yii2-widgets
  * @subpackage yii2-widget-datepicker
- * @version 1.2.0
+ * @version 1.4.0
  *
  * Custom styling for DateTimepicker
  * Built for Yii Framework 2.0
diff --git a/assets/css/datetimepicker-kv.min.css b/assets/css/datetimepicker-kv.min.css
index 04e366f..91520a2 100644
--- a/assets/css/datetimepicker-kv.min.css
+++ b/assets/css/datetimepicker-kv.min.css
@@ -2,7 +2,7 @@
  * @copyright Copyright © Kartik Visweswaran, Krajee.com, 2014
  * @package yii2-widgets
  * @subpackage yii2-widget-datepicker
- * @version 1.2.0
+ * @version 1.4.0
  *
  * Custom styling for DateTimepicker
  * Built for Yii Framework 2.0