diff --git a/requirements.txt b/requirements.txt
index 67b0012..bb2376f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ orjson==2.6.2
 promise==2.3
 pydantic==1.4
 python-multipart==0.0.5
-PyYAML==5.3.1
+PyYAML==5.4
 requests==2.23.0
 Rx==1.6.1
 six==1.14.0