diff --git a/requirements-dev.txt b/requirements-dev.txt
index e52b0f93f..60fc20ac1 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -22,4 +22,5 @@ wlc==1.13
 coloredlogs==15.0.1
 requests
 markdown
+scipy
 git+https://github.com/luxtiasco/TextRank4ZH.git
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index d6b4cc226..0aafdaa75 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,4 +18,5 @@ typing_extensions==4.5.0
 fasttext-predict==0.9.2.1
 requests
 markdown
+scipy
 git+https://github.com/luxtiasco/TextRank4ZH.git
\ No newline at end of file