diff --git a/requirements.txt b/requirements.txt
index 6fe8d50..5d4cd2f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ numpy==1.19.0
 opencv-python==4.3.0.36
 opt-einsum==3.2.1
 protobuf==3.12.2
-PyYAML==5.3.1
+PyYAML==5.4
 scipy==1.5.1
 six==1.15.0
 tensorboard==1.15.0