Vinicius Monego <monego@posteo.net> writes:

> * gnu/packages/python-crypto.scm (python-pykeepass): New variable.

[...]

> +    ;; There are no copyright headers in the source code.  The LICENSE file
> +    ;; indicates GPL3.
> +    (license license:gpl3)))

In cases like these (when no explicit version is mentioned), we use
GPL3+.  See section 14 of the GPLv3.

I made this change and committed, thanks!