diff --git a/README.md b/README.md
index 160014c..514f780 100644
--- a/README.md
+++ b/README.md
@@ -232,7 +232,7 @@ log_final_scores(scores)
 
 ## Citation
 
-Lei Liu & Min Zhu. 2022. Bertalign: Improved word embedding-based sentence alignment for Chinese–English parallel corpora of literary texts, *Digital Scholarship in the Humanities*. [https://doi.org/10.1093/llc/fqac089](https://doi.org/10.1093/llc/fqac089)
+Lei Liu & Min Zhu. 2022. Bertalign: Improved word embedding-based sentence alignment for Chinese–English parallel corpora of literary texts, *Digital Scholarship in the Humanities*. [https://doi.org/10.1093/llc/fqac089](https://doi.org/10.1093/llc/fqac089).
 
 ## Licence