diff --git a/.travis.yml b/.travis.yml
index 1744ac3..195ca5a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,12 @@ language: python
 python:
   - 3.6
 
+env:
+ - PIPENV_VENV_IN_PROJECT=1
+ - PIPENV_IGNORE_VIRTUALENVS=1
+
 install:
+  - "pip install pipenv"
   - "pipenv install"
   - "pipenv install --dev"
 
diff --git a/MANIFEST.in b/MANIFEST.in
index fc2020e..c736583 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -8,4 +8,3 @@ recursive-include bin *
 include COPYING
 include README.rst
 include CHANGELOG.rst
-include requirements.txt