diff --git a/README.md b/README.md
index 06b12d8..5f2fa3f 100644
--- a/README.md
+++ b/README.md
@@ -92,6 +92,7 @@ npm run dev
 
 1. semantic scholar api: https://api.semanticscholar.org/api-docs/#tag/Paper-Data/operation/get_graph_paper_relevance_search
 2. pubmed api: https://www.ncbi.nlm.nih.gov/books/NBK25500/
+3. i18n: https://locize.com/blog/next-app-dir-i18n/
 
 ## 许可证