diff --git a/requirements_dev.txt b/requirements_dev.txt
index 251babf..4ac1140 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,4 +6,4 @@ flake8==3.3.0
 tox==2.7.0
 coverage==4.4.1
 Sphinx==1.6.2
-isort==4.2.14
\ No newline at end of file
+isort==4.2.15
\ No newline at end of file