diff --git a/pyproject.toml b/pyproject.toml
index 86f6aca..126f672 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ requires = ["setuptools >= 63.0.0", "wheel", "setuptools-scm"]
 build-backend = "setuptools.build_meta"
 
 [project]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 name = "corrlib"
 dynamic = ["version"]
 dependencies = [