diff --git a/tox.ini b/tox.ini
index d8458b67..41db3e3d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,7 +9,7 @@ deps = -rrequirements_dev.txt
 commands =
     coverage erase
     coverage run -m pytest {posargs:tests}
-    coverage report --show-missing --fail-under 88
+    coverage report --show-missing --fail-under 93
     flake8 {[tox]project} tests setup.py
 #    pylint {[tox]project} tests setup.py