diff --git a/requirements.txt b/requirements.txt
index 43c4d5a..8268b39 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ opencv-contrib-python==4.1.0.25
 opencv-python==4.1.0.25
 Pillow==6.2.0
 protobuf==3.8.0
-PyYAML==5.1.1
+PyYAML==5.4
 scipy==1.2.2
 six==1.12.0
 tensorflow