1 files changed, 1 insertions, 0 deletions

diff --git a/tox.ini b/tox.ini
index 35d0c366..ae6a0266 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,6 +19,7 @@ deps =
     unittest-mixins==1.3
     #-e/Users/ned/unittest_mixins
     py26: unittest2==1.1.0
+    # gevent won't install on py37: https://github.com/gevent/gevent/issues/1019
     py{27,33,34,35,36}: gevent==1.2.2
     py{26,27,33,34,35,36,37}: eventlet==0.21.0
     py{26,27,33,34,35,36,37}: greenlet==0.4.12