diff --git a/requirements.txt b/requirements.txt
index 70f54d0..33bc833 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-networkx>=1.8
+networkx>=1.8,<1.10
 jsonschema>=2.3.0
 PyYAML>=3.11
 argparse>=1.2.1