diff --git a/requirements.txt b/requirements.txt
index 687c78764afcd383a72ac70e436b7c11e3974330..23e9c36b4c37859e6e88fcb1d6f1aca5bcf47d7a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 numpy
 git+git://github.com/sympy/sympy
 git+git://github.com/inducer/pyopencl
+git+git://github.com/inducer/boxtree
 git+http://git.tiker.net/trees/loopy.git
diff --git a/setup.py b/setup.py
index 9cc8e07a4aca82f5ca122bc0f47f959cf20ee502..7378186c28716989039f82d657932f4e24244b3d 100644
--- a/setup.py
+++ b/setup.py
@@ -39,6 +39,7 @@ setup(name="sumpy",
       install_requires=[
           "loo.py>=2013.1beta",
           "pytools>=2013.5.6",
+          "boxtree>=2013.1",
           "pytest>=2.3",
 
           # FIXME leave out for now