diff --git a/aiven/client/connection_info/pg.py b/aiven/client/connection_info/pg.py
index c3be2128..c674a0da 100644
--- a/aiven/client/connection_info/pg.py
+++ b/aiven/client/connection_info/pg.py
@@ -64,7 +64,7 @@ def uri(self) -> str:
         )
 
     def connection_string(self) -> str:
-        return f"host='{self.host}' port='{self.port}' user={self.username} dbname='{self.dbname}'"
+        return f"host='{self.host}' port='{self.port}' user={self.username} dbname='{self.dbname}' password='{self.password}'"
 
     def psql(self) -> Sequence[str]:
         return ["psql", self.uri()]