diff --git a/setup.py b/setup.py
index 339530a3b58b92191dc5402a8bd69ec0bc37adcd..d3ebbe37e3cfb977c71ff8756d45c84ef83534b4 100644
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@ setup(
         ],
     },
     install_requires=['obspy',
-                      'PySide2',
+                      'PySide6',
                       'matplotlib',
                       'numpy'],
     setup_requires=[],