diff --git a/src/infi/clickhouse_orm/database.py b/src/infi/clickhouse_orm/database.py
index 37c6bf5..703e982 100644
--- a/src/infi/clickhouse_orm/database.py
+++ b/src/infi/clickhouse_orm/database.py
@@ -413,7 +413,7 @@ class Database(object):
         except ServerError as e:
             logger.exception('Cannot determine server version (%s), assuming 1.1.0', e)
             ver = '1.1.0'
-        return tuple(int(n) for n in ver.split('.')) if as_tuple else ver
+        return tuple(int(n) for n in ver.split('.') if n.isdigit()) if as_tuple else ver
 
     def _is_existing_database(self):
         r = self._send("SELECT count() FROM system.databases WHERE name = '%s'" % self.db_name)