diff --git a/README.md b/README.md
index 6a8947a..57ffe15 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # automatic-archives
-These Python scripts extract a series of URLs and their metadata from a JSON file, then caches them at the Internet Archive based on their update frequency.
+This tool uses the [PDAP API](https://docs.pdap.io/api/endpoints/data-sources-database) to fetch data sources, then uses the [Save Page Now API](https://docs.google.com/document/d/1Nsv52MvSjbLb2PCpHlat0gkzw0EvtSgpKHu4mk0MnrA/edit#heading=h.1gmodju1d6p0) at the Internet Archive based on their update frequency.
 
-They are set up to run with a GitHub Actions workflow.
+Then, it uses the PDAP API to update the Data Sources' `last_cached` and `url_status` properties.
 
-The JSON URL data comes from [this repository](https://github.com/Police-Data-Accessibility-Project/data-sources-mirror).
+The script is set up to run with a GitHub Actions workflow.