diff --git a/requirements.txt b/requirements.txt
index 36055ec..7c09a56 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ pytest==4.6.3
 python-decouple==3.1
 python-jose==3.0.1
 pytz==2019.1
-PyYAML==5.1.1
+PyYAML==5.4
 requests==2.22.0
 rsa==4.0
 shellescape==3.4.1