diff --git a/.travis.yml b/.travis.yml
index 5200f17..8f937d8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,6 @@ language: python
 python:
   - pypy
   - 2.7
-  - 3.3
   - 3.4
   - 3.5
   - 3.6
@@ -19,7 +18,7 @@ matrix:
   fast_finish: true
 
   include:
-    - python: 3.5
+    - python: 3.6
       env:
       - TOXENV=flake8
 
diff --git a/README.md b/README.md
index fd8c324..3eb1529 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ The project moved to GitLab in 2013 an is now maintained by Tobias "oberstet" Ob
 
 ## Installation
 
-Scour requires [Python](https://www.python.org) 2.7 or 3.3+. Further, for installation, [pip](https://pip.pypa.io) should be used.
+Scour requires [Python](https://www.python.org) 2.7 or 3.4+. Further, for installation, [pip](https://pip.pypa.io) should be used.
 
 To install the [latest release](https://pypi.python.org/pypi/scour) of Scour from PyPI:
 
diff --git a/tox.ini b/tox.ini
index df04c05..5c67f5b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,6 @@
 envlist =
     pypy
     py27
-    py33
     py34
     py35
     py36