diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1510fd8..873fb7b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -21,7 +21,7 @@ pyparsing==2.4.2
 pytest==5.1.3
 pytest-cov==2.7.1
 pytest-flakes==4.0.0
-PyYAML==5.1.2
+PyYAML==5.4
 requests==2.22.0
 six==1.12.0
 urllib3==1.25.6