diff --git a/README.md b/README.md
index b61cc55..0d4d9b7 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,9 @@ All necessary files are located in this directory.
 - `category_analysis.py`: A module that performs category-specific analysis.
 - `requirements.txt`: A list of Python dependencies.
 
+### Input Data Files
+The tool requires two CSV files: an "addresses" file and a "boundaries" file. These can be exported directly from **NW Scheduler**.
+
 ## Usage
 
 The entire workflow is managed through `run_all.py`. You can see all commands by running: