diff --git a/setup.cfg b/setup.cfg
index d6f28d9..1539e0c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -11,7 +11,7 @@ license_file = LICENSE
 classifiers =
     Development Status :: 5 - Production/Stable
     Intended Audience :: Developers
-    License :: Public Domain
+    License :: OSI Approved :: The Unlicense (Unlicense)
     Operating System :: OS Independent
     Programming Language :: Python
     Programming Language :: Python :: 3