diff --git a/requirements.txt b/requirements.txt
index ff87099..7e743ec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ pep8-naming==0.11.1
 pycodestyle==2.6.0
 pydocstyle==5.1.1
 pyflakes==2.2.0
-PyYAML==5.3.1
+PyYAML==5.4
 radon==4.3.2
 restructuredtext-lint==1.3.1
 six==1.15.0