diff --git a/tests/test_postgresql.py b/tests/test_postgresql.py
index 079264759a2e552dd855e8987540969139db0dc2..f18a8d29d8d57d31c050a380b646920aeed3d501 100755
--- a/tests/test_postgresql.py
+++ b/tests/test_postgresql.py
@@ -75,7 +75,7 @@ def get_nodes(conf: dict) -> dict:
     :rtype: dict
     """
 
-    servers: dict = {}
+    servers = {}
 
     for item in conf.keys():
         if "pgsql-primary" in item: