Should I include a "prestigious" invited-only conference/workshop on my CV? I recently attended a workshop at a renowned research institute, to which you can participate only if you're invited by the organizers, who were rather well-known researchers.

I'm wondering if there's a point in including this information on my CV? On the one hand, it shows that some recognized people think well enough of me and my work to invite me to this type of event; on the other hand I'm afraid of appearing over-proud of a minor deal.

(For context, I'm a PhD student.)
I'm afraid of appearing over-proud of a minor deal.


In general, you should not worry about this.  A CV is a document where you are supposed to "sell yourself".  Everyone expects you to highlight those things that show your ability, experience, and recognition by prominent people in the field.  

This makes many people uncomfortable, since talking up our own achievements is not the norm for most of us.  However, it is the right thing to do for a CV.  List anything that provides evidence that you are a strong candidate.

Is it possible to have a CV that appears "over-proud"?  Yes, if you did something like clearly exaggerate your experience, or use boastful language.  But merely factually listing something you achieved or participated in is not going to create that impression.

As for this specific workshop, definitely put it on your CV.  The fact that prominent researchers thought you were worth including in this event speaks well of you.  I wouldn't call that a "minor deal", especially for a PhD student.