diff --git a/tox.ini b/tox.ini
index 4959813..33ed36a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ exclude = migrations/*,docs/*
 envlist =
     py35-{2.2},
     py36-{2.2,3.0,3.1},
-    py37-{2.2,3.0,3.1,main},
+    py37-{2.2,3.0,3.1},
     py38-{2.2,3.0,3.1,main},
 
 [gh-actions]