diff --git a/backend/requirements.txt b/backend/requirements.txt
index d6aa803c..880b2577 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -24,4 +24,4 @@ boto3==1.9.111
 sortednp==0.2.1
 graphene==2.1.6
 flask-graphql==2.0.0
-pyyaml==5.1.2
\ No newline at end of file
+pyyaml==5.4
\ No newline at end of file