diff --git a/.travis.yml b/.travis.yml
index 6591b0f..1f3fae1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,11 +6,12 @@ python:
 
 install:
   - pip install ecdsa ed25519 semver  # test without trezorlib for now
-  - pip install pylint coverage pep8
+  - pip install pylint coverage pep8 pydocstyle
 
 script:
   - pep8 trezor_agent
   - pylint --reports=no --rcfile .pylintrc trezor_agent
+  - pydocstyle trezor_agent
   - coverage run --source trezor_agent/ -m py.test -v
 
 after_success: