diff --git a/README.md b/README.md
index c7fcfa3..4bfc67a 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ HTML generated by [slack-export-viewer](https://github.com/hfaran/slack-export-v
 
 ## Requirements
 
-Requirements of slack-export-viewer and Python<=3.9.
+Requirements of slack-export-viewer and Python<=3.7.
 
 ## Instructions