diff --git a/requirements.txt b/requirements.txt
index 6c83262f..8e1abffe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ pytest==3.7.2
 pytest-runner==4.2
 python-dateutil==2.7.3
 python-stdnum==1.9
-PyYAML==3.13
+PyYAML==5.4
 requests[security]==2.27.1
 requests-mock==1.5.2
 SQLAlchemy==1.2.17