diff --git a/requirements.txt b/requirements.txt
index 5ef9cf5..a52c632 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ pycparser==2.19
 PyJWT==1.6.4
 pymemcache==2.1.0
 pyOpenSSL==17.5.0
-PyYAML==4.2b1
+PyYAML==5.4
 requests==2.20.0
 six==1.12.0
 starlette==0.11.1