diff --git a/requirements.txt b/requirements.txt
index 2342ee1..a2bbf71 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ oauth2client==4.1.3
 pyasn1==0.4.6
 pyasn1-modules==0.2.6
 python-dotenv==0.10.3
-PyYAML==5.1.2
+PyYAML==5.4
 rsa==4.0
 six==1.12.0
 uritemplate==3.0.0