Installing downloaded APK after accidentally denying

I was trying to install a downloaded APK onto my Pixel 3. During the initial install attempt I was presented with a screen that looked approximately like this one (without the added emphasis on the correct 'Install anyway' option): I took one quick glance of this screen before concluding "big green button, that must be what I want here!". Which was a substantial error, because the big, green button in fact denies the app install. Oops. And now what's happening is when I go back to the APK and try the install process again, I'm no longer prompted about whether or not I want to 'Install anyway'. Instead it just goes straight to the "App not installed" screen. The one with the gray triangle on it. How do I get the device to forget that I denied installation to this APK, so that I can successfully install it?