Indeed, I had not updated my SDK properly. I have released a new version of qstardict without libqt4-experimental-dev. I'm not sure if it will uninstall itself automatically though.
apt-get autoremove
The following packages were automatically installed and are no longer required: libqt4-experimental-core libqt4-experimental-gui libqt4-experimental-xml libqt4-experimental-network libqt4-experimental-dbus The following packages will be REMOVED: libqt4-experimental-core libqt4-experimental-dbus libqt4-experimental-gui libqt4-experimental-network libqt4-experimental-xml 0 upgraded, 0 newly installed, 5 to remove and 36 not upgraded. After this operation, 18,8MB disk space will be freed. Do you want to continue [Y/n]?