diff --git a/requirements-dev.txt b/requirements-dev.txt
index e988837..4eae589 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -27,7 +27,7 @@ Pygments==2.6.1
 pyparsing==2.4.7
 pytest==5.4.1
 pytest-cov==2.8.1
-PyYAML==5.3.1
+PyYAML==5.4
 six==1.14.0
 toml==0.10.0
 tox==3.0.0