diff --git a/.travis.yml b/.travis.yml
index 3bc861a..85918a6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,7 +8,9 @@ python:
   - "3.6"
 
 install:
-  - pip install -r requirements.txt
+  - pip install -r requirements.txt -r tests/requirements.txt
 
 script:
   - PYTHONPATH=. python tests/nldecap_tests.py
+  # 1 = fatal error, 2 = error, 32 = usage error
+  - (pylint nldecap.py; exit $(($? & $((1 + 2 + 32)))))
diff --git a/tests/requirements.txt b/tests/requirements.txt
new file mode 100644
index 0000000..7fb0ea1
--- /dev/null
+++ b/tests/requirements.txt
@@ -0,0 +1 @@
+pylint