If I look at a photo of the GY-521, I can see two pull-up resistors of 2k2 (the black smd components with the text "222"). So you don't need to add them yourself.
If I look at a photo of the GY-521, I can see two pull-up resistors of 2k2 (the black smd components with the text "222"). So you don't need to add them yourself.