diff --git a/.github/ISSUE_TEMPLATE/bug_report.yml b/.github/ISSUE_TEMPLATE/bug_report.yml
index eccebf3..b5a6f65 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report.yml
@@ -85,6 +85,7 @@ body:
       label: Rokh version
       description: Which version of Rokh are you using?
       options:
+        - Rokh 0.4
         - Rokh 0.3
         - Rokh 0.2
         - Rokh 0.1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 804250a..1975359 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+## [0.4] - 2026-04-29
+### Added
+- Bahesab calendar events
+### Changed
+- `README.md` updated
 ## [0.3] - 2025-12-21
 ### Added
 - United nations list of international days and weeks
@@ -28,7 +33,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Hijri events
 
 
-[Unreleased]: https://github.com/openscilab/rokh/compare/v0.3...dev
+[Unreleased]: https://github.com/openscilab/rokh/compare/v0.4...dev
+[0.4]: https://github.com/openscilab/rokh/compare/v0.3...v0.4
 [0.3]: https://github.com/openscilab/rokh/compare/v0.2...v0.3
 [0.2]: https://github.com/openscilab/rokh/compare/v0.1...v0.2
 [0.1]: https://github.com/openscilab/rokh/compare/0397711...v0.1
\ No newline at end of file
diff --git a/README.md b/README.md
index 2fff059..7016b41 100644
--- a/README.md
+++ b/README.md
@@ -68,9 +68,9 @@ In Farsi, Rokh is derived from Rokhdad, meaning "event." Rokh itself also means
 
 ### PyPI
 - Check [Python Packaging User Guide](https://packaging.python.org/installing/)
-- Run `pip install rokh==0.3`
+- Run `pip install rokh==0.4`
 ### Source code
-- Download [Version 0.3](https://github.com/openscilab/rokh/archive/v0.3.zip) or [Latest Source](https://github.com/openscilab/rokh/archive/dev.zip)
+- Download [Version 0.4](https://github.com/openscilab/rokh/archive/v0.4.zip) or [Latest Source](https://github.com/openscilab/rokh/archive/dev.zip)
 - Run `pip install .`
 
 ## Usage
@@ -160,6 +160,7 @@ You can also join our discord server
 <blockquote>1- <a href="https://www.time.ir/">ساعت و تقویم ایران | تاریخ امروز | Time.ir</a></blockquote>
 <blockquote>2- <a href="https://holidayapi.ir/">Jalali Holiday API</a></blockquote>
 <blockquote>3- <a href="https://www.un.org/en/observances/list-days-weeks">United Nations List of International Days and Weeks</a></blockquote>
+<blockquote>4- <a href="https://www.bahesab.ir/time/calendar/">تقویم ایران | باحساب</a></blockquote>
 
 
 ## Show your support
diff --git a/SECURITY.md b/SECURITY.md
index d5200d5..9eceebe 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -4,8 +4,8 @@
 
 | Version       | Supported          |
 | ------------- | ------------------ |
-| 0.3           | :white_check_mark: |
-| < 0.3         | :x:                |
+| 0.4           | :white_check_mark: |
+| < 0.4         | :x:                |
 
 ## Reporting a vulnerability
 
diff --git a/otherfiles/RELEASE.md b/otherfiles/RELEASE.md
index 72e225d..33ea886 100644
--- a/otherfiles/RELEASE.md
+++ b/otherfiles/RELEASE.md
@@ -1,6 +1,6 @@
 # Rokh Release Instructions
 
-**Last Update: 2025-10-02**
+**Last Update: 2026-04-27**
 
 1. Create the `release` branch under `dev`
 2. Update all version tags
@@ -9,6 +9,7 @@
 	3. `otherfiles/version_check.py`
 	4. `otherfiles/meta.yaml`
 	5. `rokh/params.py`
+	6. `SECURITY.md`
 3. Update `CHANGELOG.md`
 	1. Add a new header under `Unreleased` section (Example: `## [0.1] - 2022-08-17`)
 	2. Add a new compare link to the end of the file (Example: `[0.2]: https://github.com/openscilab/rokh/compare/v0.1...v0.2`)
diff --git a/otherfiles/meta.yaml b/otherfiles/meta.yaml
index 6dbec5d..fb36a5e 100644
--- a/otherfiles/meta.yaml
+++ b/otherfiles/meta.yaml
@@ -1,5 +1,5 @@
 {% set name = "rokh" %}
-{% set version = "0.3" %}
+{% set version = "0.4" %}
 
 package:
     name: {{ name|lower }}
diff --git a/otherfiles/version_check.py b/otherfiles/version_check.py
index ffd902d..54eca04 100644
--- a/otherfiles/version_check.py
+++ b/otherfiles/version_check.py
@@ -4,7 +4,7 @@
 import sys
 import codecs
 Failed = 0
-ROKH_VERSION = "0.3"
+ROKH_VERSION = "0.4"
 
 
 SETUP_ITEMS = [
diff --git a/rokh/params.py b/rokh/params.py
index 2e1af89..8afe525 100644
--- a/rokh/params.py
+++ b/rokh/params.py
@@ -2,7 +2,7 @@
 """Parameters for the rokh package."""
 from enum import Enum
 
-ROKH_VERSION = "0.3"
+ROKH_VERSION = "0.4"
 
 
 class DateSystem(Enum):
diff --git a/setup.py b/setup.py
index 3863895..79054cb 100644
--- a/setup.py
+++ b/setup.py
@@ -32,14 +32,14 @@ def read_description() -> str:
 setup(
     name='rokh',
     packages=['rokh', 'rokh.events'],
-    version='0.3',
+    version='0.4',
     description="Rokh: Iranian Calendar Events Collection",
     long_description=read_description(),
     long_description_content_type='text/markdown',
     author='Rokh Development Team',
     author_email='rokh@openscilab.com',
     url='https://github.com/openscilab/rokh',
-    download_url='https://github.com/openscilab/rokh/tarball/v0.3',
+    download_url='https://github.com/openscilab/rokh/tarball/v0.4',
     keywords="events date date-system calendar gregorian hijri jalali",
     project_urls={
             'Source': 'https://github.com/openscilab/rokh',
@@ -47,7 +47,7 @@ def read_description() -> str:
     install_requires=get_requires(),
     python_requires='>=3.7',
     classifiers=[
-        'Development Status :: 2 - Pre-Alpha',
+        'Development Status :: 3 - Alpha',
         'Natural Language :: English',
         'Natural Language :: Persian',
         'License :: OSI Approved :: MIT License',