diff --git a/pyproject.toml b/pyproject.toml
index ba965b2..0613f99 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=61.0"]
+requires = ["setuptools >= 77.0.3"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -22,7 +22,7 @@ classifiers = [
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
-  "Operating System :: Linux"
+  "Operating System :: POSIX :: Linux"
 ]
 requires-python = ">=3.10"
 dependencies = [