diff --git a/setup.py b/setup.py
index b0789c2..22f9d7c 100755
--- a/setup.py
+++ b/setup.py
@@ -46,6 +46,6 @@
                     'prescient.simulator.tests':['regression_tests_data/**/*'],
                    },
       install_requires=['numpy','matplotlib','pandas','scipy','pyomo>=6.1.2',
-                        'python-dateutil','networkx','jupyter', 'gridx-egret==0.5.5',
+                        'python-dateutil','networkx','jupyter', 'gridx-egret==0.5.6.dev0',
                        ],
      )