Server version is older than urs

[Confus_]

Hi, i meet this problem for the first time ever, and i play for a while .
When i want join one server i have an error message that says me (in french): the m&b server version (1.130) is older than urs (1.157)
Someone have an idea to fix that problem because i cant join any server?  :'(
I look on steam but it not seen possible to update to an older version of a game.