diff --git a/setup.cfg b/setup.cfg
index 6960fa2..6054053 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,6 +16,8 @@
     Programming Language :: Python
     Programming Language :: Python :: 2
     Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.5
     Topic :: Internet :: Name Service (DNS)
 
 [global]