diff --git a/requirements.txt b/requirements.txt
index 61048ad..0c8f2aa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ psycopg2==2.8.4
 pycodestyle==2.5.0
 pylint==2.4.4
 pyserial==3.4
-PyYAML==5.3
+PyYAML==5.4
 serial==0.0.97
 six==1.14.0
 typed-ast==1.4.1