diff --git a/setup.py b/setup.py
index cceb343..5f282b5 100644
--- a/setup.py
+++ b/setup.py
@@ -37,8 +37,8 @@
         "pyparsing",
         "lrparsing",
         "sympy",
-        "greenery",
-        "neo4j-driver",
+        "greenery==3.3.1",
+        "neo4j-driver==1.7.4",
         "neobolt"
     ]
 )