diff --git a/requirements.txt b/requirements.txt
index e1370c1..a5fe88e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ https://github.com/docker/docker-py/archive/1.10.6.tar.gz#egg=docker-py
 dockerfile-parse==1.1.0
 multidict==5.1.0
 PyGithub==1.54.1
-pyyaml==5.3.1
+pyyaml==5.4.1
 taskcluster==40.0.3
 taskcluster-urls==13.0.1
 twine==2.0.0