diff --git a/requirements_dev.txt b/requirements_dev.txt
index 19086ce38..1470f2080 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -12,9 +12,7 @@ pytest-localserver==0.3.6
 pytest-splinter==1.8.5
 pytest-pythonpath==0.7.1
 splinter==0.7.7
-selenium==3.6.0
-# >=3.4,<3.5
-flaky==3.4.0
+selenium==3.9.0
 
 django-dynamic-fixture==1.8.0