diff --git a/.travis.yml b/.travis.yml
index 11fd0af..6520d3a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,14 +16,16 @@ before_install:
   - conda info -a
 
 install:
+  # Environment setup.
   - conda env create -f environment.yml python=$TRAVIS_PYTHON_VERSION
   - conda activate chop
   - python setup.py develop
   # The following is only needed for examples and coverage tests
   - conda install matplotlib
   - pip install tensorboardX cox requests
+  - pip install advertorch copt
   - pip install git+https://github.com/RobustBench/robustbench
-  - pip install pytest advertorch copt python-coveralls coverage pytest-cov
+  - pip install python-coveralls coverage pytest-cov
 
 script:
   - py.test -v --cov=chop