diff --git a/requirements-dev.txt b/requirements-dev.txt
index 32b0bd5..6b422c3 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -12,7 +12,7 @@ django-appconf==1.0.2
 docutils==0.13.1 # via sphinx
 first==2.0.1              # via pip-tools
 flake8==3.3.0
-isort==4.2.5
+isort==4.2.12
 Jinja2==2.9.6 # via sphinx
 MarkupSafe==1.0          # via jinja2
 mccabe==0.6.1