diff --git a/setup.py b/setup.py
index a59d9ee..4eeb8d7 100644
--- a/setup.py
+++ b/setup.py
@@ -62,6 +62,6 @@ setup(
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: Implementation :: PyPy3',
+        'Programming Language :: Python :: Implementation :: PyPy',
     ],
 )