diff --git a/.travis.yml b/.travis.yml
index e72e5b64..e7d9b833 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,6 @@ language: python
 cache: pip
 python:
   - 2.7
-  - 3.3
   - 3.4
   - 3.5
   - 3.6
diff --git a/setup.py b/setup.py
index cfa8ae89..7893cd22 100644
--- a/setup.py
+++ b/setup.py
@@ -43,6 +43,7 @@ def readall(path):
     author_email='me@kennethreitz.com',
     url='https://github.com/requests/requests-oauthlib',
     packages=['requests_oauthlib', 'requests_oauthlib.compliance_fixes'],
+    python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
     install_requires=['oauthlib>=0.6.2', 'requests>=2.0.0'],
     extras_require={'rsa': ['oauthlib[rsa]>=0.6.2', 'requests>=2.0.0']},
     license='ISC',
@@ -55,7 +56,6 @@ def readall(path):
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
diff --git a/tox.ini b/tox.ini
index fd85408d..2cb582d4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27, py33, py34, py35, py36, pypy
+envlist = py27, py34, py35, py36, pypy
 
 [testenv]
 deps=