diff --git a/requirements_dev.txt b/requirements_dev.txt
index e7f422e..179ad0c 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,6 +1,6 @@
 pip==9.0.1
 punch.py==1.4.2
-watchdog==0.8.3
+watchdog==0.9.0
 flake8==3.4.1
 tox==2.9.1
 coverage==4.4.1