diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22ed7e0..d0a61c0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### Changed
-- Optimized GitLab CI cache configuration
+- Optimized CI cache configuration
 - Removed temporary test scripts and improved .gitignore
 
 ## [1.0.0] - 2025-10-26
@@ -103,6 +103,6 @@ The initial release established the core framework with:
 
 ---
 
-[Unreleased]: https://gitlab.com/your-repo/async_sdl_python/compare/v1.0.0...HEAD
-[1.0.0]: https://gitlab.com/your-repo/async_sdl_python/compare/v0.0.1...v1.0.0
-[0.0.1]: https://gitlab.com/your-repo/async_sdl_python/releases/tag/v0.0.1
+[Unreleased]: https://github.com/shenning00/async_sdl_python/compare/v1.0.0...HEAD
+[1.0.0]: https://github.com/shenning00/async_sdl_python/compare/v0.0.1...v1.0.0
+[0.0.1]: https://github.com/shenning00/async_sdl_python/releases/tag/v0.0.1
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 23c584c..4ab511b 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -29,11 +29,11 @@ We are committed to providing a welcoming and inclusive environment for all cont
 
 ### Setting Up Your Development Environment
 
-1. Fork the repository on GitLab
+1. Fork the repository on GitHub
 
 2. Clone your fork:
 ```bash
-git clone https://gitlab.com/YOUR_USERNAME/async_sdl_python.git
+git clone https://github.com/YOUR_USERNAME/async_sdl_python.git
 cd async_sdl_python
 ```
 
@@ -121,7 +121,7 @@ pylint pysdl/
 git push origin feature/amazing-feature
 ```
 
-Then create a Merge Request on GitLab with a clear description of your changes.
+Then create a Pull Request on GitHub with a clear description of your changes.
 
 ## Development Guidelines
 
@@ -482,9 +482,9 @@ Commit types:
 - `test:` - Adding tests
 - `chore:` - Maintenance tasks
 
-### Merge Request Guidelines
+### Pull Request Guidelines
 
-When creating a merge request:
+When creating a pull request:
 
 1. **Title**: Clear, descriptive summary of changes
 2. **Description**: Include:
@@ -504,7 +504,7 @@ When creating a merge request:
 
 ### Review Process
 
-After submitting a merge request:
+After submitting a pull request:
 
 1. Automated tests will run via CI/CD
 2. Maintainers will review your code
@@ -522,8 +522,8 @@ Tips for faster reviews:
 If you have questions or need help:
 
 - Check existing documentation in the `docs/` directory
-- Review closed issues and merge requests for similar questions
+- Review closed issues and pull requests for similar questions
 - Open a new issue for discussion
-- Reach out to maintainers via GitLab
+- Reach out to maintainers via GitHub
 
 Thank you for contributing to PySDL!
diff --git a/README.md b/README.md
index a89badf..02a9cf1 100644
--- a/README.md
+++ b/README.md
@@ -2,8 +2,8 @@
 
 [![Python Version](https://img.shields.io/badge/python-3.9%2B-blue.svg)](https://www.python.org/downloads/)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
-[![Pipeline Status](https://gitlab.com/your-repo/async_sdl_python/badges/main/pipeline.svg)](https://gitlab.com/your-repo/async_sdl_python/-/commits/main)
-[![Coverage](https://gitlab.com/your-repo/async_sdl_python/badges/main/coverage.svg)](https://gitlab.com/your-repo/async_sdl_python/-/commits/main)
+[![CI](https://github.com/shenning00/async_sdl_python/actions/workflows/ci.yml/badge.svg)](https://github.com/shenning00/async_sdl_python/actions/workflows/ci.yml)
+[![codecov](https://codecov.io/gh/shenning00/async_sdl_python/branch/main/graph/badge.svg)](https://codecov.io/gh/shenning00/async_sdl_python)
 
 A lightweight, asynchronous Python library implementing the **Specification and Description Language (SDL)** actor model pattern for building concurrent, event-driven applications.
 
@@ -34,7 +34,7 @@ pip install pysdl
 
 **From source**:
 ```bash
-git clone https://gitlab.com/your-repo/async_sdl_python.git
+git clone https://github.com/shenning00/async_sdl_python.git
 cd async_sdl_python
 # Upgrade pip first to avoid installation issues
 python -m pip install --upgrade pip
@@ -245,20 +245,10 @@ This project is licensed under the MIT License - see the LICENSE file for detail
 
 ## Support
 
-- **Issues**: Report bugs via GitLab Issues
+- **Issues**: Report bugs via GitHub Issues
 - **Documentation**: See the [docs/](docs/) directory
 - **Examples**: See [examples/main.py](examples/main.py) and [docs/examples.md](docs/examples.md)
 
-## Breaking Changes in v1.0.0
-
-PySDL v1.0.0 introduces breaking changes to support instance-based systems. This enables running multiple independent SDL systems in the same process and eliminates global state.
-
-Key changes:
-- `SdlSystem` is now instance-based - create instances with `system = SdlSystem()`
-- `SdlProcess.create()` and `__init__()` now require `system` parameter
-- All `SdlSystem.method()` static calls are now `system.method()` instance calls
-- Processes access their system via `self._system` attribute
-
 ## Roadmap
 
 Future enhancements under consideration:
diff --git a/SECURITY.md b/SECURITY.md
index 9e6b9ca..568c9d6 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -15,7 +15,7 @@ We take the security of PySDL seriously. If you believe you have found a securit
 
 ### Reporting Process
 
-**Please do not report security vulnerabilities through public GitHub/GitLab issues.**
+**Please do not report security vulnerabilities through public GitHub issues.**
 
 Instead, please report them via email to:
 - **Email**: shenning_00@yahoo.com
@@ -87,7 +87,7 @@ When using PySDL in your applications:
 ## Security Updates
 
 Security updates will be released as patch versions and announced via:
-- GitLab release notes
+- GitHub release notes
 - CHANGELOG.md updates
 - Email notification to reporters
 
diff --git a/docs/getting_started.md b/docs/getting_started.md
index dd1a08b..72bed0c 100644
--- a/docs/getting_started.md
+++ b/docs/getting_started.md
@@ -38,7 +38,7 @@ Before you begin with PySDL, ensure you have:
 
 ```bash
 # Clone the repository
-git clone https://gitlab.com/your-repo/async_sdl_python.git
+git clone https://github.com/shenning00/async_sdl_python.git
 cd async_sdl_python
 
 # Install in editable mode
diff --git a/docs/troubleshooting.md b/docs/troubleshooting.md
index 9d230a3..6316d41 100644
--- a/docs/troubleshooting.md
+++ b/docs/troubleshooting.md
@@ -952,7 +952,7 @@ If you're still stuck:
 1. **Check logs**: Enable verbose logging
 2. **Read docs**: [API Reference](api_reference.md), [Architecture](architecture.md)
 3. **Review examples**: [Examples](examples.md)
-4. **File an issue**: Report bugs on GitLab
+4. **File an issue**: Report bugs on GitHub
 5. **Ask questions**: Use project discussions or issues
 
 ---
diff --git a/pyproject.toml b/pyproject.toml
index 6767892..56ee64a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,10 +38,10 @@ dev = [
 ]
 
 [project.urls]
-Homepage = "https://gitlab.com/YOUR_USERNAME/async_sdl_python"
-"Bug Tracker" = "https://gitlab.com/YOUR_USERNAME/async_sdl_python/-/issues"
-Documentation = "https://gitlab.com/YOUR_USERNAME/async_sdl_python/-/tree/main/docs"
-"Source Code" = "https://gitlab.com/YOUR_USERNAME/async_sdl_python"
+Homepage = "https://github.com/shenning00/async_sdl_python"
+"Bug Tracker" = "https://github.com/shenning00/async_sdl_python/issues"
+Documentation = "https://github.com/shenning00/async_sdl_python/tree/main/docs"
+"Source Code" = "https://github.com/shenning00/async_sdl_python"
 
 [tool.ruff]
 # Set line length to match Black's default