diff --git a/{{cookiecutter.app_name}}/Pipfile b/{{cookiecutter.app_name}}/Pipfile
index 675b85b..bcedf55 100644
--- a/{{cookiecutter.app_name}}/Pipfile
+++ b/{{cookiecutter.app_name}}/Pipfile
@@ -55,5 +55,5 @@ flake8-blind-except = "==0.1.1"
 flake8-debugger = "==3.1.0"
 flake8-docstrings = "==1.3.0"
 flake8-isort = "==2.7.0"
-isort = "==4.3.20"
+isort = "==4.3.21"
 pep8-naming = "==0.8.2"