diff --git a/requirements.txt b/requirements.txt
index 8ad024f15..67cbee01a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ pydantic==1.10.8
 #pymilvus==2.2.8
 pytest==7.2.2
 python_docx==0.8.11
-PyYAML
+PyYAML==6.0.1
 # sentence_transformers==2.2.2
 setuptools==65.6.3
 tenacity==8.2.2