diff --git a/setup.cfg b/setup.cfg
index bc52823..af8c903 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -21,6 +21,7 @@
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: 3.13
     Topic :: Internet :: Name Service (DNS)
 
 [files]