diff --git a/version_3/requirements.txt b/version_3/requirements.txt
index ccb6c29..268618a 100644
--- a/version_3/requirements.txt
+++ b/version_3/requirements.txt
@@ -47,7 +47,7 @@ Pyrebase==3.0.27
 python-dateutil==2.6.1
 python-editor==1.0.3
 python-jwt==2.0.1
-PyYAML==5.1.2
+PyYAML==5.4
 requests==2.11.1
 requests-toolbelt==0.7.0
 rsa==4.0