diff --git a/planetmint/backend/tarantool/connection.py b/planetmint/backend/tarantool/connection.py
index 967c4ca..160146d 100644
--- a/planetmint/backend/tarantool/connection.py
+++ b/planetmint/backend/tarantool/connection.py
@@ -17,8 +17,8 @@ logger = logging.getLogger(__name__)
 class TarantoolDBConnection(DBConnection):
     def __init__(
         self,
-        host: str = "localhost",
-        port: int = 3303,
+        host: str = None,
+        port: int = None,
         login: str = None,
         password: str = None,
         **kwargs,
diff --git a/planetmint/config.py b/planetmint/config.py
index f9c89e2..b070e1a 100644
--- a/planetmint/config.py
+++ b/planetmint/config.py
@@ -95,7 +95,7 @@ class Config(metaclass=Singleton):
             "tendermint": {
                 "host": "localhost",
                 "port": 26657,
-                "version": "v0.31.5",  # look for __tm_supported_versions__
+                "version": "v0.34.15",  # look for __tm_supported_versions__
             },
             "database": self.__private_database_map,
             "log": {