Note support for Python 3.9 (#8665)

As expected, all tests pass locally without modification.

Signed-off-by: Dan Callahan <danc@element.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/INSTALL.md b/INSTALL.md

index 22f7b7c029..c6fcb3bd7f 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -57,7 +57,7 @@ light workloads.
 System requirements:
 
 - POSIX-compliant system (tested on Linux & OS X)
-- Python 3.5.2 or later, up to Python 3.8.
+- Python 3.5.2 or later, up to Python 3.9.
 - At least 1GB of free RAM if you want to join large public rooms like #matrix:matrix.org
 
 Synapse is written in Python but some of the libraries it uses are written in