1 files changed, 1 insertions, 0 deletions

diff --git a/setup.cfg b/setup.cfg
index 571f538..be62af2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -44,6 +44,7 @@ dev =
     black==19.10b0 ; python_version >= '3.6'
     flake8==3.7.9
     Flask-Testing==0.8.0
+    isort==4.3.21
     pytest==5.4.1
     tox==3.14.6
     zest.releaser==6.20.1