diff --git a/pyproject.toml b/pyproject.toml
index baa6d0f..fbb190a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,6 +4,7 @@ requires = ["poetry-core>=1.0.0", "poetry-dynamic-versioning>=1.0.0,<2.0.0"]
 
 [project]
 name = "reqstool-python-poetry-plugin"
+requires-python = ">=3.13"
 dynamic = ["version"]
 
 [tool.poetry]