Emapplot function – change font size?

Hi guys,
I have been plotting some results from my RNA seq experiment.
I am using a nice function from the package enrichplot (explained in detail in the clusterprofiler vignette) which is called emapplot (link: yulab-smu.top/clusterProfiler-book/chapter12.html#enrichment-map).
Does anyone know how to change the font size in the plot?

Thanks in advance for your help

all the best
Luca