diff --git a/requirements-dev.txt b/requirements-dev.txt
index 695e751..2add18b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -12,7 +12,7 @@ pluggy==0.8.1
 pre-commit==1.14.2
 py==1.7.0
 pytest==4.1.0
-PyYAML==5.1
+PyYAML==5.4
 requirements-tools==1.2.1
 setuptools==40.6.3
 six==1.12.0