diff --git a/tools/pip-requires b/tools/pip-requires
index 9acd037fe8..683665a3f6 100644
--- a/tools/pip-requires
+++ b/tools/pip-requires
@@ -19,7 +19,7 @@ happybase>=0.4
 httplib2
 iso8601>=0.1.4
 jsonrpclib
-jsonschema>=1.0.0
+jsonschema>=1.0.0,<2
 kazoo>=0.9,<=1.1
 kombu>2.4.7
 lockfile>=0.8