diff --git a/README.md b/README.md
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@@ -76,6 +76,7 @@ Custom chat modes define specific behaviors and tools for GitHub Copilot Chat, e
 - [Database Administrator Chat Mode](chatmodes/PostgreSQL%20DBA.chatmode.md) - Work with PostgreSQL databases using the PostgreSQL extension.
 - [Debug Mode Instructions](chatmodes/debug.chatmode.md) - Debug your application to find and fix a bug
 - [Planning mode instructions](chatmodes/planner.chatmode.md) - Generate an implementation plan for new features or refactoring existing code.
+- [Prompt Doctor Chat Mode](chatmodes/prompt-doctor.chatmode.md) - Advanced prompt engineering and AI communication optimization specialist
 - [Refine Requirement or Issue Chat Mode](chatmodes/refine-issue.chatmode.md) - Refine the requirement or issue with Acceptance Criteria, Technical Considerations, Edge Cases, and NFRs