diff --git a/requirements_dev.txt b/requirements_dev.txt
index d3d575c..efa32f5 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,7 +1,7 @@
 pip==10.0.1
 bumpversion==0.5.3
 wheel==0.31.1
-watchdog==0.8.3
+watchdog==0.9.0
 flake8==3.5.0
 tox==3.0.0
 Sphinx==1.7.5