1 files changed, 1 insertions, 0 deletions

diff --git a/setup.cfg b/setup.cfg
index 18c9e1df..35db335a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -36,6 +36,7 @@ classifiers =
     License :: OSI Approved :: MIT License
     Operating System :: OS Independent
     Programming Language :: Python :: 3
+    Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3.5
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7