diff --git a/.travis.yml b/.travis.yml
index 0b683c68a..bd24cf61a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,8 +7,9 @@ python:
   - "pypy"
   - "pypy3"
 install:
-  - pip install pylint flake8 coveralls
+  - pip install coveralls
   - pip install -r requirements.txt
+  - pip install -r requirements-dev.txt
   - 'if [[ $TRAVIS_PYTHON_VERSION == 2.6 ]]; then pip install unittest2; fi'
 script:
   - nosetests --with-coverage --cover-package telegram/
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 632d532ee..5e82bf20b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,3 +1,4 @@
 flake8
 nose
 pylint
+unittest2
\ No newline at end of file