diff --git a/pyproject.toml b/pyproject.toml
index e6c20d6..8380ebe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "hatchling.build"
 name = "span-panel-simulator"
 version = "1.0.10"
 description = "Standalone eBus simulator for SPAN panels"
-requires-python = ">=3.14"
+requires-python = ">=3.12"
 dependencies = [
     "aiomqtt>=2.0.0",
     "aiohttp>=3.9.0",