diff --git a/requirements.txt b/requirements.txt
index 04597381..9b7faa0a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -166,7 +166,7 @@ pytz==2018.5
 PyWavelets==1.0.1
 pywin32==223
 pywinpty==0.5.5
-PyYAML==3.13
+PyYAML==5.4
 pyzmq==17.1.2
 qiniu==7.2.2
 qrcode==6.0