diff --git a/tests/test_postgresql.py b/tests/test_postgresql.py
index ca33f3e5..b3c91f73 100644
--- a/tests/test_postgresql.py
+++ b/tests/test_postgresql.py
@@ -78,7 +78,6 @@ class MockConnect:
     def __init__(self):
         self.autocommit = False
         self.closed = 0
-        self.server_version = 90400
 
     def cursor(self):
         return MockCursor()