diff --git a/pyproject.toml b/pyproject.toml
index ea5d8b2..c196e02 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,13 +18,12 @@ dependencies = [
     "py3langid~=0.3",
 ]
 readme = "README.md"
-requires-python = ">= 3.9"
+requires-python = ">= 3.10"
 
 classifiers = [
   "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
   "Natural Language :: English",
   "Operating System :: OS Independent",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",