diff --git a/.travis.yml b/.travis.yml
index 962858f..ec1c596 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,10 +5,7 @@ python:
   - "3.5"
   - "3.6"
 install:
-  - "pip install pep8"
-  - "pip install nose"
-  - "pip install coverage"
-  - "pip install coveralls"
+  - "pip install -r tests-requirements.txt"
   - "pip install -r requirements.txt"
 script:
   ./tests.sh
diff --git a/tests-requirements.txt b/tests-requirements.txt
index 3fa73d2..3aea72f 100644
--- a/tests-requirements.txt
+++ b/tests-requirements.txt
@@ -1,3 +1,4 @@
 pycodestyle; python_version >= '3.0'
 nose; python_version >= '3.0'
 coverage; python_version >= '3.0'
+coveralls; python_version >= '3.0'