diff --git a/requirements_dev.txt b/requirements_dev.txt
index a0e4efca..6d8360ce 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,7 +1,7 @@
 -e .
 bump2version==0.5.8
 wheel==0.31.1
-watchdog==0.8.3
+watchdog==0.9.0
 flake8==3.5.0
 tox==3.1.2
 coverage==4.5.1