diff --git a/api/requirements.txt b/api/requirements.txt
index 63e97b8..afe2d53 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -17,7 +17,7 @@ numpy==1.13.3
 olefile==0.44
 Pillow==4.3.0
 protobuf==3.5.1
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 scipy==1.0.0
 six==1.11.0