diff --git a/src/epub/content.opf b/src/epub/content.opf
index b50c877..c4807ea 100644
--- a/src/epub/content.opf
+++ b/src/epub/content.opf
@@ -44,7 +44,7 @@
en-US
https://gutenberg.net.au/ebooks03/0300851h.html
https://archive.org/details/in.ernet.dli.2015.206302
- 156629
+ 156630
71.04
https://en.wikipedia.org/wiki/Elmer_Gantry
https://github.com/standardebooks/sinclair-lewis_elmer-gantry