diff --git a/.gitmodules b/.gitmodules
index 59b1ae786ef44a004e7157cf00651c54b586e68b..28b78a77bc955b534169d102634a0458cfd094ae 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -9,4 +9,5 @@
 [submodule "3rdparty/SortFilterProxyModel"]
 	path = 3rdparty/SortFilterProxyModel
 	url = https://github.com/atraczyk/SortFilterProxyModel.git
+	branch = qt-6
 	ignore = dirty