Overleaf supports uploading up to 50 MB per file, however currently the bib file anthology.bib exceeds 50 MB. Thus, to easily use the bib file on overleaf this repository provides split files each < 50 MB.
TL;DR. acl-org/acl-style-files#25
Find the latest release below:
Latest: anthology_bib.zip
Unzip the compressed archive of anthology bib files, and modify your .tex file to include all bibs.
\bibliography{anthology,anthology_p2,custom} % add more bib files as required.The resource is licensed under MIT.