diff --git a/.ruff.toml b/.ruff.toml
index 7a8331a..cccd6ed 100644
--- a/.ruff.toml
+++ b/.ruff.toml
@@ -1,6 +1,6 @@
 # The contents of this file is based on https://github.com/home-assistant/core/blob/dev/pyproject.toml
 
-target-version = "py310"
+target-version = "py39"
 
 select = [
     "B007", # Loop control variable {name} not used within loop body