Cups web UI is showing a different version than what's installed

[nstjc]

Operating System: RHEL 7.9 (Maipo)

For some reason when accessing Cups in the web UI it's showing that it's a older version (1.4.2) than what is installed (1.6.3) on the server. I'm not sure how to fix this. Ideally, we want the web UI to reflect the latest version without having to completely reinstall Cups. Any help is appreciated!

Output for command 'yum info cups':

Loaded plugins: product-id, search-disabled-repos, subscription-manager
Installed Packages
Name        : cups
Arch        : x86_64
Epoch       : 1
Version     : 1.6.3
Release     : 51.el7
Size        : 4.6 M
Repo        : installed
From repo   : rhel-7-server-rpms
Summary     : CUPS printing system
URL         : http:https://www.cups.org/
License     : GPLv2
Description : CUPS printing system provides a portable printing layer for
            : UNIX® operating systems. It has been developed by Apple Inc.
            : to promote a standard printing solution for all UNIX vendors and users.
            : CUPS provides the System V and Berkeley command-line interfaces.

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Screenshot of the web UI:

[nstjc]

Discovered that the previous admin that updated CUPS on the server some how prevented the index.html files from getting updated. Some of the language index.html files reflected the correct version while others didn't. Had to manually update the html headers in those files.