diff --git a/.travis.yml b/.travis.yml
index 6609e3836..065c5a10e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,6 +22,7 @@ install:
   - pip install autopep8
   - pip install hacking
   - pip install coveralls
+  - pip install opencv-python
   - python setup.py develop
   - python -c "import numpy; numpy.show_config()"
 before_script:
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 33b6fbc7d..1b8dfc87c 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,6 +3,7 @@ autopep8
 atari_py
 hacking
 mock
+opencv-python
 pytest
 sphinx
 sphinx_rtd_theme