diff --git a/requirements.txt b/requirements.txt
index ebf4d74..b73201e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,7 @@ numpy
 jinja2
 matplotlib
 
+
 # Optional
 pvlib
 plotly
diff --git a/setup.py b/setup.py
index 6e356a0..fada790 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,8 @@
     'install_requires': ['numpy >= 1.10.4',
                          'pandas >= 0.18.0',
                          'matplotlib',
-                         'jinja2'],
+                         'jinja2',
+                         'pytest'],
     'scripts': [],
     'include_package_data': True
 }