diff --git a/pyproject.toml b/pyproject.toml
index 7e779b9f..92e6eccc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,7 +66,7 @@ pyside2 = ["pyside2"]
 # https://github.com/pyapp-kit/superqt/pull/177
 # https://github.com/pyapp-kit/superqt/pull/164
 # https://bugreports.qt.io/browse/PYSIDE-2627
-pyside6 = ["pyside6 !=6.5.0,!=6.5.1,!=6.6.2"]
+pyside6 = ["pyside6 !=6.5.0,!=6.5.1,!=6.6.2,<6.8"]
 pyqt5 = ["pyqt5"]
 pyqt6 = ["pyqt6<6.7"]
 font-fa5 = ["fonticon-fontawesome5"]