diff --git a/requirements-py3.txt b/requirements-py3.txt
index cd183a525..28c649e28 100644
--- a/requirements-py3.txt
+++ b/requirements-py3.txt
@@ -13,5 +13,4 @@ cryptography>=2.0  # Earlier versions would fail to install
 cssselect>=0.9.1
 lxml>=3.5.0
 service_identity>=16.0.0
-six>=1.10.0
 zope.interface>=4.1.3
diff --git a/setup.py b/setup.py
index 8f5f14f0d..85d797f88 100644
--- a/setup.py
+++ b/setup.py
@@ -72,7 +72,6 @@ setup(
         'pyOpenSSL>=16.2.0',
         'queuelib>=1.4.2',
         'service_identity>=16.0.0',
-        'six>=1.10.0',
         'w3lib>=1.17.0',
         'zope.interface>=4.1.3',
         'protego>=0.1.15',