diff --git a/requirements.txt b/requirements.txt
index c9f1784..5612e6d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 -i https://pypi.org/simple
 python-frontmatter==0.4.5
-pyyaml==5.1
+pyyaml==5.4
 six==1.12.0
 toml==0.10.0