diff --git a/stubs/hdbcli/hdbcli/__init__.pyi b/stubs/hdbcli/hdbcli/__init__.pyi
index 539250c10..bbf8a8962 100644
--- a/stubs/hdbcli/hdbcli/__init__.pyi
+++ b/stubs/hdbcli/hdbcli/__init__.pyi
@@ -1,5 +1,7 @@
+from typing import Final
+
 from . import dbapi as dbapi
 
-__version__: str
+__version__: Final[str]
 
 __all__ = ["dbapi"]
diff --git a/stubs/hdbcli/hdbcli/dbapi.pyi b/stubs/hdbcli/hdbcli/dbapi.pyi
index 2b1282a1f..0db854ac8 100644
--- a/stubs/hdbcli/hdbcli/dbapi.pyi
+++ b/stubs/hdbcli/hdbcli/dbapi.pyi
@@ -50,6 +50,7 @@ class LOB:
     def write(self, object: str | bytes) -> int: ...
 
 _Parameters: TypeAlias = Sequence[tuple[Any, ...]] | None
+_Holdability: TypeAlias = Literal[0, 1, 2, 3]
 
 class Cursor:
     description: tuple[tuple[Any, ...], ...]
@@ -74,7 +75,7 @@ class Cursor:
     def fetchmany(self, size: int | None = ...) -> list[ResultRow]: ...
     def getrowsaffectedcounts(self) -> tuple[Any, ...]: ...
     def getpacketsize(self) -> int: ...
-    def get_resultset_holdability(self) -> int: ...
+    def get_resultset_holdability(self) -> _Holdability: ...
     def getwarning(self) -> Warning | None: ...
     def haswarning(self) -> bool: ...
     def clearwarning(self) -> None: ...
@@ -95,7 +96,7 @@ class Cursor:
     def setfetchsize(self, value: int) -> None: ...
     def setquerytimeout(self, value: int) -> None: ...
     def setpacketsize(self, value: int) -> None: ...
-    def set_resultset_holdability(self, holdability: int) -> None: ...
+    def set_resultset_holdability(self, holdability: _Holdability) -> None: ...
     def setoutputsize(self, *args: Any, **kwargs: Any) -> None: ...
     def setcommandinfo(self, command_info: str, line_number: int) -> None: ...