diff --git a/docs/contributing.rst b/docs/contributing.rst
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -282,7 +282,7 @@ of Mercurial's (https://www.mercurial-sc
 consistency with existing code. Run ``scripts/run-all-cleanup`` before
 committing to ensure some basic code formatting consistency.
 
-We support Python 3.6 and later.
+We support Python 3.9 and later.
 
 We try to support the most common modern web browsers. IE9 is still supported
 to the extent it is feasible, IE8 is not.