diff --git a/images/halsey/halsey-api/req/requirements.txt b/images/halsey/halsey-api/req/requirements.txt
index 00cabdd..992b94d 100644
--- a/images/halsey/halsey-api/req/requirements.txt
+++ b/images/halsey/halsey-api/req/requirements.txt
@@ -19,7 +19,7 @@ pickleshare==0.7.5
 prompt-toolkit==2.0.9
 ptyprocess==0.6.0
 Pygments==2.4.2
-PyYAML==5.1
+PyYAML==5.4
 requests==2.21.0
 six==1.12.0
 traitlets==4.3.2