diff --git a/README.md b/README.md
index daf1e9f..aea9f40 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,6 @@
 
 Documentation about OpenPGP for application developers.
 
-Sphinx-generated output document: https://openpgp.codeberg.page/test/
\ No newline at end of file
+Sphinx-generated output document:
+- html: https://openpgp.codeberg.page/test/
+- epub: https://openpgp.codeberg.page/test/OpenPGPforapplicationdevelopers.epub
\ No newline at end of file