diff --git a/themes.txt b/themes.txt
index a9c4e49..5def068 100644
--- a/themes.txt
+++ b/themes.txt
@@ -524,6 +524,7 @@ github.com/xioyito/NewBee
 github.com/xslingcn/vno-hugo
 github.com/Xzya/hugo-material-blog
 github.com/yanlinlin82/simple-style
+github.com/yassi/hugo-theme-yassi
 github.com/yihui/hugo-xmag
 github.com/yihui/hugo-xmin
 github.com/yiming-m/scholar-lite