diff --git a/requirements.txt b/requirements.txt
index fa04195ea..43eddf5b1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -135,6 +135,7 @@ BCEmbedding
 loguru==0.7.2
 umap-learn
 fasttext==0.9.2
+pybind11==2.13.1
 volcengine==1.0.141
 readability-lxml==0.8.1
 html_text==0.6.2