diff --git a/requirements.txt b/requirements.txt
index de9f91de3bb0fd44f856b5378f594bf2599e654b..16cb4e70ff8b7306ec64a7e6b65506775ce8a009 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 numpy
+git+git://github.com/inducer/pytools
 git+git://github.com/inducer/islpy
 cgen
 git+git://github.com/pyopencl/pyopencl