diff --git a/sunset/apps-bak/5-hipster/microservices-demo/src/recommendationservice/requirements.txt b/sunset/apps-bak/5-hipster/microservices-demo/src/recommendationservice/requirements.txt
index 50114b2..6808658 100644
--- a/sunset/apps-bak/5-hipster/microservices-demo/src/recommendationservice/requirements.txt
+++ b/sunset/apps-bak/5-hipster/microservices-demo/src/recommendationservice/requirements.txt
@@ -27,7 +27,7 @@ pyasn1-modules==0.2.4     # via google-auth
 pyasn1==0.4.5             # via pyasn1-modules, rsa
 python-json-logger==0.1.9
 pytz==2018.9              # via google-api-core
-pyyaml==3.13              # via google-python-cloud-debugger
+pyyaml==5.1               # via google-python-cloud-debugger
 requests==2.21.0          # via google-api-core
 rsa==4.0                  # via google-auth
 six==1.12.0               # via google-api-core, google-api-python-client, google-auth, google-python-cloud-debugger, grpcio, protobuf