diff --git a/tests/backends/test_db_url.py b/tests/backends/test_db_url.py
index 0f2933a55..bd1428d61 100644
--- a/tests/backends/test_db_url.py
+++ b/tests/backends/test_db_url.py
@@ -7,6 +7,7 @@
 
 _postgres_scheme_engines = {
     "postgres": "tortoise.backends.asyncpg",
+    "postgresql": "tortoise.backends.asyncpg",
     "asyncpg": "tortoise.backends.asyncpg",
     "psycopg": "tortoise.backends.psycopg",
 }
diff --git a/tortoise/backends/base/config_generator.py b/tortoise/backends/base/config_generator.py
index 3ea3a7ee9..cf54cbad4 100644
--- a/tortoise/backends/base/config_generator.py
+++ b/tortoise/backends/base/config_generator.py
@@ -9,6 +9,7 @@
 from tortoise.exceptions import ConfigurationError
 
 urlparse.uses_netloc.append("postgres")
+urlparse.uses_netloc.append("postgresql")
 urlparse.uses_netloc.append("asyncpg")
 urlparse.uses_netloc.append("psycopg")
 urlparse.uses_netloc.append("sqlite")
@@ -127,6 +128,7 @@
 }
 # Create an alias for backwards compatibility
 DB_LOOKUP["postgres"] = DB_LOOKUP["asyncpg"]
+DB_LOOKUP["postgresql"] = DB_LOOKUP["asyncpg"]
 
 
 def _quote_url_userinfo(db_url: str) -> str:
@@ -211,7 +213,7 @@ def expand_db_url(db_url: str, testing: bool = False) -> dict:
         # asyncpg accepts None for password, but aiomysql not
         params[vmap["password"]] = (
             None
-            if (not url.password and db_backend in {"postgres", "asyncpg", "psycopg"})
+            if (not url.password and db_backend in {"postgres", "postgresql", "asyncpg", "psycopg"})
             else urlparse.unquote(url.password or "")
         )