diff --git a/pyproject.toml b/pyproject.toml
index 8bcaa305..74641020 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dev = [
     "pytest~=8.0",
 ]
 pyqt6 = ["PyQt6>=6.7", "PyQt6-WebEngine>=6.7"]
-pyside6 = ["PySide6~=6.7.2"]
+pyside6 = ["PySide6==6.7.2"]
 
 [project.urls]
 "Bug Tracker" = "https://gitlab.psi.ch/bec/bec_widgets/issues"