diff --git a/README.md b/README.md
index 947bc7b2..5445c9e4 100644
--- a/README.md
+++ b/README.md
@@ -463,6 +463,7 @@ Interact with Git repositories and version control platforms. Enables repository
 - [marcelmarais/Spotify](https://github.com/marcelmarais/spotify-mcp-server) - 📇 🏠 Control Spotify playback and manage playlists.
 - [NakaokaRei/swift-mcp-gui](https://github.com/NakaokaRei/swift-mcp-gui.git) 🏠 🍎 - MCP server that can execute commands such as keyboard input and mouse movement
 - [awwaiid/mcp-server-taskwarrior](https://github.com/awwaiid/mcp-server-taskwarrior) 🏠 📇 - An MCP server for basic local taskwarrior usage (add, update, remove tasks)
+- [pwh-pwh/cal-mcp](https://github.com/pwh-pwh/cal-mcp) - An MCP server for Mathematical expression calculation
 
 ## Frameworks