diff --git a/requirements.txt b/requirements.txt
index 34300bb..35392c3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 phovea_server==2.0.0
 -e git+https://github.com/Caleydo/pathfinder_ccle.git@master#egg=pathfinder_ccle
-py2neo>=2.0.4
+py2neo>=2.0.4,<=3.0.0
 pydotplus==2.0.2