diff --git a/pyproject.toml b/pyproject.toml
index 44ca3a5..2554edc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,6 @@ classifiers = [
     "Intended Audience :: Developers",
     "Intended Audience :: Information Technology",
     "Intended Audience :: System Administrators",
-    "Operating System :: OS Independent",
     "Topic :: Internet :: WWW/HTTP",
     "Topic :: Internet :: WWW/HTTP :: WSGI :: Middleware",
     "Topic :: Software Development :: Libraries :: Python Modules",