diff --git a/pyproject.toml b/pyproject.toml
index f104449..a3ab208 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ include = [
 ]
 
 [tool.poetry.dependencies]
-python = ">=3.7.2, <4.0.0"
+python = ">=3.9, <4.0.0"
 paho-mqtt = ">=1.5.0, <2.0.0"
 dash = ">=2.9.0, <3.0.0"
 dash-daq = "^0.5.0"