pin selenium

setup.py

@@ -11,9 +11,6 @@
 # FITNESS FOR A PARTICULAR PURPOSE
 #
 ##############################################################################
-# Standard Library
-import sys
-
 from setuptools import find_packages
 from setuptools import setup
 
@@ -27,8 +24,6 @@ def readfile(name):
 CHANGES = readfile("CHANGES.txt")
 VERSION = '3.0.0.dev0'
 
-PY37MIN = sys.version_info[0] == 3 and sys.version_info[1] >= 7
-
 requires = [
     "Chameleon>=2.5.1",  # Markup class
     "colander>=1.0a1",  # cstruct_children/appstruct_children, Set
@@ -72,11 +67,7 @@ def readfile(name):
     "pylons-sphinx-themes",
 ]
 
-# Selenium 4.0 does not work on Python 3.6.
-if PY37MIN:
-    functional_testing_extras.extend(["selenium >= 4.0.0.b4"])
-else:
-    functional_testing_extras.extend(["selenium >= 3.0, < 4.0"])
+functional_testing_extras.extend(["selenium >= 4.0.0.b4, < 4.10.0"])
 
 branch_version = ".".join(VERSION.split(".")[:2])