diff --git a/README.md b/README.md
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@@ -258,6 +258,7 @@ Official integrations are maintained by companies building production ready MCP
 - <img height="12" width="12" src="https://greptime.com/favicon.ico" alt="Greptime Logo" /> **[GreptimeDB](https://github.com/GreptimeTeam/greptimedb-mcp-server)** - Provides AI assistants with a secure and structured way to explore and analyze data in [GreptimeDB](https://github.com/GreptimeTeam/greptimedb).
 - <img height="12" width="12" src="https://growi.org/assets/images/favicon.ico" alt="GROWI Logo" /> **[GROWI](https://github.com/growilabs/growi-mcp-server)** - Official MCP Server to integrate with GROWI APIs.
 - <img height="12" width="12" src="https://gyazo.com/favicon.ico" alt="Gyazo Logo" /> **[Gyazo](https://github.com/nota/gyazo-mcp-server)** - Search, fetch, upload, and interact with Gyazo images, including metadata and OCR data.
+- <img height="12" width="12" src="https://h33.ai/favicon.ico" alt="H33 Logo" /> **[H33](https://github.com/H33ai-postquantum/mcp-h33)** - Native Rust MCP server for the [H33](https://h33.ai) post-quantum security platform: substrate attestation, FHE biometric auth, ZK-STARK proofs, three-family signing (Dilithium + FALCON + SPHINCS+), BotShield, HICS code scoring, HATS Tier 1 governance, and Bitcoin UTXO quantum insurance. `cargo install h33-mcp`.
 - <img height="12" width="12" src="https://cdn.prod.website-files.com/6374050260446c42f94dc90f/63d828be3e13d32ee6973f35_favicon-32x32.png" alt="Harper Logo" /> **[Harper](https://github.com/HarperDB/mcp-server)** - An MCP server providing an interface for MCP clients to access data within [Harper](https://www.harpersystems.dev/).
 - <img height="12" width="12" src="https://www.herokucdn.com/favicons/favicon.ico" alt="Heroku Logo" /> **[Heroku](https://github.com/heroku/heroku-mcp-server)** - Interact with the Heroku Platform through LLM-driven tools for managing apps, add-ons, dynos, databases, and more.
 - <img height="12" width="12" src="https://heyoncall.com/favicon.ico" alt="HeyOnCall Logo" /> **[HeyOnCall](https://heyoncall.com/blog/mcp-server-for-paging-a-human)** - Page a human, sending critical or non-critical alerts to the free [HeyOnCall](https://heyoncall.com/) iOS or Android apps.