diff --git a/setup.py b/setup.py
index 150cb1cc4bc6ee13a7d516ab09c8824d76a2c6c9..67d943af3be4446834bf7262a91b8596b601ca85 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@ setup(name="loo.py",
           ],
 
       install_requires=[
-          "pytools>=2017.1",
+          "pytools>=2017.3",
           "pymbolic>=2016.2",
           "genpy>=2016.1.2",
           "cgen>=2016.1",