Problems Installing macOS Catalina 10.15.4 Update

Hello all! I'm having difficulties installing the new macOS Catalina 10.15.4 update. I have restarted my computer (multiple times) as prompted in order to install the updates, however, they do not install. I keep restarting my computer to hopefully get the software to install, but it doesn't seem to be working. Does anyone know why this may be? Thank you all in advance!