diff --git a/web/regression/requirements.txt b/web/regression/requirements.txt
index b5b0146..69f4a27 100644
--- a/web/regression/requirements.txt
+++ b/web/regression/requirements.txt
@@ -1,5 +1,6 @@
 pyperclip~=1.5.27
-selenium==3.7.0
+selenium==3.3.3; python_version < '2.7'
+selenium==3.7.0; python_version >= '2.7'
 testscenarios==0.5.0
 testtools==2.0.0
 traceback2==1.4.0