diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
index 864c176..da616c9 100644
--- a/.github/.OwlBot.lock.yaml
+++ b/.github/.OwlBot.lock.yaml
@@ -1,3 +1,3 @@
 docker:
   image: gcr.io/repo-automation-bots/owlbot-python:latest
-  digest: sha256:4c981a6b6f2b8914a448d7b3a01688365be03e3ed26dfee399a6aa77fb112eaa
+  digest: sha256:c66ba3c8d7bc8566f47df841f98cd0097b28fff0b1864c86f5817f4c8c3e8600
diff --git a/docs/conf.py b/docs/conf.py
index 84e9e24..b9e8d03 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -366,6 +366,7 @@
     ),
     "grpc": ("https://grpc.github.io/grpc/python/", None),
     "proto-plus": ("https://proto-plus-python.readthedocs.io/en/latest/", None),
+    "protobuf": ("https://googleapis.dev/python/protobuf/latest/", None),
     
 }