diff --git a/server/requirements.txt b/server/requirements.txt
index 0eb91ba..459ca7e 100644
--- a/server/requirements.txt
+++ b/server/requirements.txt
@@ -21,7 +21,7 @@ numpy==1.16.2
 pbr==5.1.3
 Pillow==5.4.1
 protobuf==3.7.0
-PyYAML==5.1
+PyYAML==5.4
 requests==2.21.0
 scipy==1.2.1
 six==1.12.0