diff --git a/.travis.yml b/.travis.yml
index 35ac1df..771fda0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,9 +9,11 @@ python:
 install:
  - pip install coverage
  - pip install pylint
+ - pip install mutpy
 script:
  - python test.py
  - coverage run --include=primes.py,test.py,binary_search.py test.py && coverage report -m --fail-under=100 --rcfile=coveragerc
  - python speed_test.py --all
  - python speed_test.py --fermat 6
  - pylint primes.py || true
+ - mut.py --target primes --unit-test test -m