diff --git a/CHANGELOG.md b/CHANGELOG.md
index 912f4d1..1d8acb5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file.
 
-## [0.6.2] - 2020-02-14
+## [0.6.3] - 2020-02-14
 
 ### ADDED
 
@@ -32,4 +32,4 @@ All notable changes to this project will be documented in this file.
 
 
 [0.6.0]: https://github.com/weltlink/django-quickbooks/compare/0.5...0.6
-[0.6.2]: https://github.com/weltlink/django-quickbooks/compare/0.6...0.6.2
+[0.6.3]: https://github.com/weltlink/django-quickbooks/compare/0.6...0.6.3
diff --git a/README.md b/README.md
index ae99652..264b072 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ This is an ongoing project to integrate any Django project with Quickbooks Deskt
 integration support for <b>Python 3.6+</b> and <b>Django 2.0+</b>
 
 
-| Version:  | 0.6.2                                                                                                                |
+| Version:  | 0.6.3                                                                                                                |
 |-----------|--------------------------------------------------------------------------------------------------------------------|
 | Download: | https://pypi.org/project/django-quickbooks/                                                                        |
 | Source:   | https://github.com/weltlink/django-quickbooks/                                                                     |
diff --git a/django_quickbooks/exceptions.py b/django_quickbooks/exceptions.py
index cad4215..bbebffb 100644
--- a/django_quickbooks/exceptions.py
+++ b/django_quickbooks/exceptions.py
@@ -23,7 +23,7 @@ def _get_error_details(detail, code):
 class QbException(Exception):
     detail = 'Quickbooks exception error'
 
-    def __init__(self, error):
+    def __init__(self, error=None):
         if error:
             self.detail = error
 
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 851bfda..dd81cd6 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -22,7 +22,7 @@
 author = 'Bedilbek Khamidov'
 
 # The full version, including alpha/beta/rc tags
-release = '0.6.0'
+release = '0.6.3'
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/setup.cfg b/setup.cfg
index b4e816c..04a6f5b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = django-quickbooks
-version = 0.6.2
+version = 0.6.3
 description = A Django app to integrate with quickbooks.
 url = https://github.com/weltlink/django-quickbooks
 author = Bedilbek Khamidov