yaramod.ParserError when encountering a negative value in meta

[nockstarr]

Whenever a negative integer value is encountered in meta: yaramod.ParserError: Error at 4.11: Syntax error: Unexpected -, expected one of true, false, integer, " is raised

yaramod==4.0.2
Python 3.12.7

Reproduce:

def bug():
    rule = """rule TestRule : FILE
{
	meta:
		score = -60
		quality = 153

	strings:
		$s1 = "..."

	condition:
		$s1
}
    """
    y = yaramod.Yaramod(yaramod.Features.AllCurrent)
    y_file = y.parse_string(rule)
    print(y_file.text)

Found when running through yara-forge extended ruleset.