diff --git a/requirements.txt b/requirements.txt
index a6eb678..05d2ac9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ oauthlib==3.0.1
 pkg-resources==0.0.0
 pyasn1==0.4.5
 pyasn1-modules==0.2.4
-PyYAML==5.1
+PyYAML==5.4
 requests==2.21.0
 requests-oauthlib==1.2.0
 rsa==4.0