From 3e150a8a83753a139f75d0aa010ab57d43954901 Mon Sep 17 00:00:00 2001
From: Charles Tapley Hoyt <cthoyt@gmail.com>
Date: Sat, 19 Nov 2022 12:04:35 +0100
Subject: [PATCH] Update README.md

---
 README.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 21cbd45..d545a4e 100644
--- a/README.md
+++ b/README.md
@@ -247,7 +247,11 @@ If you'd like to contribute, there's a submodule called `chembl_downloader.queri
 where you can add a useful SQL queries along with a description of what it does for easy
 importing and reuse.
 
-## Statistics
+## Statistics and Compatibility
+
+`chembl-downloader` is compatible with all versions of ChEMBL. However, some files are
+not available for all versions. For example, the SQLite version of the database was first
+added in release 21 (2015-02-12).
 
 |   ChEMBL Version | Release Date   |
 |------------------|----------------|