diff --git a/srcpkgs/umbrello/template b/srcpkgs/umbrello/template
index d6af584c236..af46e4c9537 100644
--- a/srcpkgs/umbrello/template
+++ b/srcpkgs/umbrello/template
@@ -11,6 +11,7 @@ license="GPL-2.0-or-later, LGPL-2.0-or-later, GFDL-1.2-or-later"
 homepage="https://umbrello.kde.org/"
 distfiles="${KDE_SITE}/release-service/${version}/src/umbrello-${version}.tar.xz"
 checksum=b2f769c7bd1cc259170b62c68d2dca05b4a143dd1048dbb507cf2bbb3020a193
+python_version=2 #unverified
 
 pre_configure() {
 	vsed -i CMakeLists.txt -e 's/# set default umbrello version/set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-suggest-override")/'