diff --git a/pyorient/constants.py b/pyorient/constants.py
index 516e62d9..7f7700f8 100644
--- a/pyorient/constants.py
+++ b/pyorient/constants.py
@@ -5,7 +5,7 @@
 #
 NAME = "OrientDB Python binary client (pyorient)"
 VERSION = "1.5.5"
-SUPPORTED_PROTOCOL = 36
+SUPPORTED_PROTOCOL = 37
 
 #
 # Binary Types