diff --git a/CHANGELOG.md b/CHANGELOG.md
index faa4c86..4ad9958 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 # Changelog
 
 ## 0.4.x
+### 0.4.1: Finished GUI and TUI
+- Both **GUI** and **TUI** now fully utilize the `optima35` class for core functionality.
+- All planned features are operational and integrated into both interfaces.
+- **Next Step**: Bug hunting and optimization.
+- The fork `optima-35-tui` has been deleted, as **OPTIMA-35** now includes both **TUI** and **GUI** versions within the same project.
+
 ### 0.4.0: Splitting into Classes
 - **Code Organization:**
   - Core functionality for **Optima-35** is now refactored into `optima35.py` for better separation of logic and reusability.