diff --git a/paper/paper.bib b/paper/paper.bib
index 6fc8e36..681e7c3 100644
--- a/paper/paper.bib
+++ b/paper/paper.bib
@@ -38,7 +38,7 @@ @article{camacho_blast_2009
 
 @article{yu_ggtree_2017,
 	author = {Yu, Guangchuang and Smith, David K. and Zhu, Huachen and Guan, Yi and Lam, Tommy Tsan-Yuk},
-	title = {ggtree: an r package for visualization and annotation of phylogenetic trees with their covariates and other associated data},
+	title = {{ggtree}: an {R} package for visualization and annotation of phylogenetic trees with their covariates and other associated data},
 	journal = {Methods in Ecology and Evolution},
 	volume = {8},
 	number = {1},