diff --git a/app/python/requirements.txt b/app/python/requirements.txt
index f39fd4a..b86ac41 100644
--- a/app/python/requirements.txt
+++ b/app/python/requirements.txt
@@ -13,7 +13,7 @@ numpy==1.16.4
 #opencv-python==3.4.4.19
 protobuf==3.8.0
 psutil==5.6.3
-PyYAML==5.1.1
+PyYAML==5.4
 six==1.12.0
 tensorboard==1.13.1
 tensorflow==1.13.1