If you have an account on Software Informer, then you can use the app's page to submit updates to the application. I see that version 52 was barely released and probably that's the cause to the missing updated, but it will be there as I update my apps through the Software Informer client as well.
Install Google Chrome on your PC and the Software Informer client as well. Perform a Refresh, then use the version of Google Chrome and visit its app page. Click on Suggest a correction and add all the necessary data.