Documenting stored procedure changes and code changes

Fellow redditors, I come to you seeking help from the wise ones!

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In my company, we're developing some software that is being used in different countries. Each country has it's specific exceptions that are used only in their country. A simple example: we have a different set of national holidays than they do. To make things even more complicated, we regularly update the version in our main country. Other countries get the latest version once a year!

Which brings me to my problem. I do not remember which stored procedures were changed in the last 12 months.

I'm looking for a way to document changes that were made in the last months. That way I can just update the database with the new additions. So far, I'm using a simple word document, to write stuff that I've changed. I'm positive that this is not the best way.

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What do you guys use? Asana, Jira?