diff --git a/.travis.yml b/.travis.yml
index 505baa95b..7f937868d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,8 @@ go:
 
 # add TF_CONSUL_TEST=1 to run consul tests
 # they were causing timouts in travis
+# add TF_ETCDV3_TEST=1 to run etcdv3 tests
+# if added, TF_ETCDV3_ENDPOINTS must be set to a comma-separated list of (insecure) etcd endpoints against which to test
 env:
   - CONSUL_VERSION=0.7.5 GOMAXPROCS=4