Re-Installing Gson Lib

I am running openhab on a rasperry pi. When I started to play around with a new binding I found out that something is wrong with my gson lib. In Karaf console it shows up like this:

openhab> bundle:list -s | grep
 22 │ Active   │  80 │ 2.7.0                  │
196 │ Resolved │  80 │ 2.3.1                  │

So they are not both active (the way it was on a secondary test install of openhab. I think the best way would be to have a new install of the gson lib. How do I achieve that without destroying my openhab install?? I am afraid of doing a fresh install of openhab with all the add-ons I manually installed on top that would seem like a lot of work for me, who is not to fit in programming all that stuff :wink:
Thanks for the help