diff --git a/fetcher.py b/fetcher.py
index 741a1c9..2371e97 100644
--- a/fetcher.py
+++ b/fetcher.py
@@ -19,7 +19,7 @@ import arxiv2bib as arxiv_metadata
 import tools
 import params
 from bibtexparser.bparser import BibTexParser
-from isbntools.dev.fmt import fmtbib
+from isbntools.dev._fmt import fmtbib
 
 
 def download(url):