diff --git a/uncompyle6/main.py b/uncompyle6/main.py
index 5585bfb9..1cdd2657 100644
--- a/uncompyle6/main.py
+++ b/uncompyle6/main.py
@@ -46,7 +46,7 @@ def _get_outstream(outfile: str) -> Any:
 
 def decompile(
     co,
-    bytecode_version: str = PYTHON_VERSION_TRIPLE,
+    bytecode_version: Tuple[int] = PYTHON_VERSION_TRIPLE,
     out=sys.stdout,
     showasm=None,
     showast={},