Index: setup.cfg
--- setup.cfg.orig
+++ setup.cfg
@@ -14,7 +14,7 @@ multi_line_output = 3
 not_skip = __init__.py
 
 [tool:pytest]
-addopts = --showlocals --full-trace --flake8 --isort --cov rgain3 --cov-report term-missing
+addopts = --showlocals --full-trace --cov rgain3 --cov-report term-missing
 flake8-max-line-length = 80
 flake8-max-complexity = 20