diff --git a/requirements.txt b/requirements.txt
index 49a0b84..7ae1e6e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ pre-commit==1.18.3
 py==1.8.0
 pyparsing==2.4.2
 pytest==5.1.3
-PyYAML==5.1.2
+PyYAML==5.4
 requests==2.22.0
 six==1.12.0
 toml==0.10.0