diff --git a/git_trophy_lambda/requirements.txt b/git_trophy_lambda/requirements.txt
index 0e3e39f..2565d3c 100644
--- a/git_trophy_lambda/requirements.txt
+++ b/git_trophy_lambda/requirements.txt
@@ -28,7 +28,7 @@ placebo==0.9.0
 ptyprocess==0.6.0
 python-dateutil==2.8.1
 python-slugify==4.0.1
-PyYAML==5.3.1
+PyYAML==5.4
 requests==2.9.1
 s3transfer==0.3.3
 six==1.15.0