diff --git a/requirements.txt b/requirements.txt
index 9e0a877..1146f1f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ py==1.8.0
 pytest==4.4.0
 pytest-aiohttp==0.3.0
 pytest-cov==2.6.1
-PyYAML==5.1
+PyYAML==5.4
 six==1.12.0
 soupsieve==1.9
 toml==0.10.0