diff --git a/images/binderhub-service/requirements.in b/images/binderhub-service/requirements.in
index bd3d878..6431bda 100644
--- a/images/binderhub-service/requirements.in
+++ b/images/binderhub-service/requirements.in
@@ -2,7 +2,13 @@
 # To update requirements.txt, use the "Run workflow" button at
 # https://github.com/2i2c-org/binderhub-service/actions/workflows/watch-dependencies.yaml
 #
-# needed by binderhub.config.py
+binderhub[pycurl] @ git+https://github.com/jupyterhub/binderhub@main
+
+# ruamel-yaml is required by this chart's binderhub_config.py
 ruamel-yaml
 
-binderhub[pycurl] @ git+https://github.com/jupyterhub/binderhub@main
+# google-cloud-logging is an optional dependency to help log BinderHub launch
+# events to a Google Cloud Logging as done by mybinder.org deployments here:
+# https://github.com/jupyterhub/mybinder.org-deploy/blob/e47021fe/mybinder/values.yaml#L193-L216.
+#
+google-cloud-logging==3.*
diff --git a/images/binderhub-service/requirements.txt b/images/binderhub-service/requirements.txt
index e409054..fa6dcd6 100644
--- a/images/binderhub-service/requirements.txt
+++ b/images/binderhub-service/requirements.txt
@@ -38,10 +38,45 @@ escapism==1.0.1
     # via binderhub
 fqdn==1.5.1
     # via jsonschema
+google-api-core[grpc]==2.19.1
+    # via
+    #   google-api-core
+    #   google-cloud-appengine-logging
+    #   google-cloud-core
+    #   google-cloud-logging
 google-auth==2.32.0
-    # via kubernetes
+    # via
+    #   google-api-core
+    #   google-cloud-appengine-logging
+    #   google-cloud-core
+    #   google-cloud-logging
+    #   kubernetes
+google-cloud-appengine-logging==1.4.4
+    # via google-cloud-logging
+google-cloud-audit-log==0.2.5
+    # via google-cloud-logging
+google-cloud-core==2.4.1
+    # via google-cloud-logging
+google-cloud-logging==3.10.0
+    # via -r requirements.in
+googleapis-common-protos[grpc]==1.63.2
+    # via
+    #   google-api-core
+    #   google-cloud-audit-log
+    #   grpc-google-iam-v1
+    #   grpcio-status
 greenlet==3.0.3
     # via sqlalchemy
+grpc-google-iam-v1==0.13.1
+    # via google-cloud-logging
+grpcio==1.65.0
+    # via
+    #   google-api-core
+    #   googleapis-common-protos
+    #   grpc-google-iam-v1
+    #   grpcio-status
+grpcio-status==1.62.2
+    # via google-api-core
 idna==3.7
     # via
     #   jsonschema
@@ -86,6 +121,21 @@ prometheus-client==0.20.0
     # via
     #   binderhub
     #   jupyterhub
+proto-plus==1.24.0
+    # via
+    #   google-api-core
+    #   google-cloud-appengine-logging
+    #   google-cloud-logging
+protobuf==4.25.3
+    # via
+    #   google-api-core
+    #   google-cloud-appengine-logging
+    #   google-cloud-audit-log
+    #   google-cloud-logging
+    #   googleapis-common-protos
+    #   grpc-google-iam-v1
+    #   grpcio-status
+    #   proto-plus
 pyasn1==0.6.0
     # via
     #   pyasn1-modules
@@ -125,6 +175,7 @@ referencing==0.35.1
 requests==2.32.3
     # via
     #   docker
+    #   google-api-core
     #   jupyterhub
     #   kubernetes
     #   requests-oauthlib