diff --git a/.travis.yml b/.travis.yml
index 8abe97fe..5079cc76 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,8 +9,6 @@ matrix:
       env: TOXENV=py,codecov
     - python: 3.4
       env: TOXENV=py,codecov
-    - python: 3.3
-      env: TOXENV=py,codecov
     - python: 2.7
       env: TOXENV=py,codecov
     - python: pypy
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 5ab6534a..a73dd7d0 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -109,8 +109,8 @@ depends on which part of Flask you're working on. Travis-CI will run the full
 suite when you submit your pull request.
 
 The full test suite takes a long time to run because it tests multiple
-combinations of Python and dependencies. You need to have Python 2.7, 3.3,
-3.4, 3.5 3.6, and PyPy 2.7 installed to run all of the environments. Then run::
+combinations of Python and dependencies. You need to have Python 2.7,
+3.4, 3.5, 3.6, and PyPy 2.7 installed to run all of the environments. Then run::
 
     tox
 
diff --git a/docs/extensiondev.rst b/docs/extensiondev.rst
index 3e8f30d4..475de451 100644
--- a/docs/extensiondev.rst
+++ b/docs/extensiondev.rst
@@ -383,7 +383,7 @@ extension to be approved you have to follow these guidelines:
     (``PackageName==dev``).
 9. The ``zip_safe`` flag in the setup script must be set to ``False``,
    even if the extension would be safe for zipping.
-10. An extension currently has to support Python 2.7, Python 3.3 and higher.
+10. An extension currently has to support Python 2.7, Python 3.4 and higher.
 
 
 
diff --git a/docs/installation.rst b/docs/installation.rst
index d700753f..9f02296f 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -6,7 +6,7 @@ Installation
 Python Version
 --------------
 
-We recommend using the latest version of Python 3. Flask supports Python 3.3
+We recommend using the latest version of Python 3. Flask supports Python 3.4
 and newer, Python 2.7 and PyPy.
 
 Dependencies
diff --git a/docs/python3.rst b/docs/python3.rst
index a7a4f165..f760fe15 100644
--- a/docs/python3.rst
+++ b/docs/python3.rst
@@ -7,7 +7,7 @@ Flask, its dependencies, and most Flask extensions support Python 3.
 You should start using Python 3 for your next project,
 but there are a few things to be aware of.
 
-You need to use Python 3.3 or higher.  3.2 and older are *not* supported.
+You need to use Python 3.4 or higher.  3.3 and older are *not* supported.
 
 You should use the latest versions of all Flask-related packages.
 Flask 0.10 and Werkzeug 0.9 were the first versions to introduce Python 3 support.
diff --git a/setup.py b/setup.py
index 328f107f..bf2d0bc6 100644
--- a/setup.py
+++ b/setup.py
@@ -97,7 +97,6 @@ setup(
         '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 4804a756..b77de08b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,9 @@
 [tox]
 envlist =
-    py{36,35,34,33,27,py}
+    py{36,35,34,27,py}
     py{36,27,py}-simplejson
-    py{36,33,27,py}-devel
-    py{36,33,27,py}-lowest
+    py{36,27,py}-devel
+    py{36,27,py}-lowest
     docs-html
     coverage-report