diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..0839b4a
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,43 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.0] - 2025-02-03
+
+### Changed
+- **BREAKING**: Complete architectural rebuild from standalone MCP server to HTTP wrapper pattern
+- **BREAKING**: Now wraps official `gitea-mcp-server` package instead of implementing Gitea operations directly
+- Project renamed from standalone implementation to HTTP transport wrapper
+
+### Added
+- HTTP transport layer via Starlette/uvicorn for Claude Desktop compatibility
+- Configuration management module (`config/`) with environment variable support
+- Tool filtering module (`filtering/`) for Claude Desktop compatibility controls
+- Bearer token authentication middleware (`middleware/auth.py`)
+- Comprehensive test suite (30 tests covering all modules)
+- Docker deployment infrastructure with docker-compose.yml
+- Health check endpoints (`/health`, `/healthz`, `/ping`)
+- Deployment documentation and Docker guides
+- Environment variable configuration with `.env` support
+
+### Removed
+- Standalone MCP tool implementations (now delegated to wrapped `gitea-mcp-server`)
+- Direct Gitea API integration code (handled by wrapped server)
+
+## [0.1.0] - 2025-01-XX (Initial Standalone Implementation)
+
+### Added
+- Initial Python project structure
+- MCP server core with stdio transport
+- Issue operations (create, update, list, get)
+- Label operations (add, remove, list)
+- Milestone operations (create, update, list)
+- Authentication with Gitea API tokens
+- Comprehensive README and documentation
+
+### Notes
+- This version was a standalone MCP server implementation
+- Superseded by HTTP wrapper architecture in Sprint 02
diff --git a/pyproject.toml b/pyproject.toml
index 3add2bc..dac0c8a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "gitea-mcp-remote"
-version = "0.1.0"
+version = "1.0.0"
 description = "HTTP transport wrapper for Gitea MCP server"
 readme = "README.md"
 requires-python = ">=3.10"