diff --git a/setup.py b/setup.py
index 048792b098e0d50356fde913db4dab6dc03b62ba..b6bbb22dc6956eecce11131a72f84d214cec44e6 100644
--- a/setup.py
+++ b/setup.py
@@ -46,6 +46,7 @@ def main():
 
           install_requires=[
               "pytest>=2.3",
+              "pytools>=2015.1.4",
               "modepy>=2013.3",
               "meshmode>=2013.3",
               "pyopencl>=2013.1",