diff --git a/tools/pip-requires b/tools/pip-requires
index c9157aa..42f23e2 100644
--- a/tools/pip-requires
+++ b/tools/pip-requires
@@ -1,4 +1,4 @@
 cliff>=1.2.1
-jsonschema>=0.8
+jsonschema>=0.8,<1
 requests>=0.8.3,<1.0
 python-keystoneclient>=0.2.0