diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -275,6 +275,7 @@ The DuckLake file format was released on 2025-05-27: see the [website](https://d
 - [Overture Places UA](https://github.com/xtrustinfo/overture-places-ua) - Extract all Ukrainian POIs from Overture Maps releases into CSV or Parquet with a single DuckDB query.
 - [dlt-dbt-duckdb-evidence](https://github.com/Ddscully/dlt-dbt-duckdb-evidence) - End-to-end pipeline over seven public data sources in a single DuckDB file, using dlt, dbt, Polars, Dagster and Evidence. Rebuilds from live sources on every push and publishes the DuckDB file and per-table Parquet monthly.
 - [Caso Abierto](https://caso-abierto.christianvadillo.workers.dev) - Detective game where each case file is a set of Parquet tables queried with SQL, running DuckDB-WASM in the browser.
+- [GTFS Scorecard](https://github.com/ChelseaKR/gtfs-scorecard) - Data-quality grades for 2,400+ public transit (GTFS) feed records. DuckDB builds the cross-agency query layer and a public Parquet table that DuckDB can query over HTTP, and the site's SQL page runs DuckDB-WASM in the browser.
 
 ## Integrations