diff --git a/google-cloud-firestore-admin-v1/lib/google/firestore/admin/v1/index_pb.rb b/google-cloud-firestore-admin-v1/lib/google/firestore/admin/v1/index_pb.rb
index 78eb22836fbf..8546b2d72ce6 100644
--- a/google-cloud-firestore-admin-v1/lib/google/firestore/admin/v1/index_pb.rb
+++ b/google-cloud-firestore-admin-v1/lib/google/firestore/admin/v1/index_pb.rb
@@ -4,10 +4,11 @@
 
 require 'google/protobuf'
 
+require 'google/api/field_behavior_pb'
 require 'google/api/resource_pb'
 
 
-descriptor_data = "\n%google/firestore/admin/v1/index.proto\x12\x19google.firestore.admin.v1\x1a\x19google/api/resource.proto\"\xac\x07\n\x05Index\x12\x0c\n\x04name\x18\x01 \x01(\t\x12@\n\x0bquery_scope\x18\x02 \x01(\x0e\x32+.google.firestore.admin.v1.Index.QueryScope\x12<\n\tapi_scope\x18\x05 \x01(\x0e\x32).google.firestore.admin.v1.Index.ApiScope\x12;\n\x06\x66ields\x18\x03 \x03(\x0b\x32+.google.firestore.admin.v1.Index.IndexField\x12\x35\n\x05state\x18\x04 \x01(\x0e\x32&.google.firestore.admin.v1.Index.State\x1a\xbd\x02\n\nIndexField\x12\x12\n\nfield_path\x18\x01 \x01(\t\x12\x42\n\x05order\x18\x02 \x01(\x0e\x32\x31.google.firestore.admin.v1.Index.IndexField.OrderH\x00\x12O\n\x0c\x61rray_config\x18\x03 \x01(\x0e\x32\x37.google.firestore.admin.v1.Index.IndexField.ArrayConfigH\x00\"=\n\x05Order\x12\x15\n\x11ORDER_UNSPECIFIED\x10\x00\x12\r\n\tASCENDING\x10\x01\x12\x0e\n\nDESCENDING\x10\x02\"9\n\x0b\x41rrayConfig\x12\x1c\n\x18\x41RRAY_CONFIG_UNSPECIFIED\x10\x00\x12\x0c\n\x08\x43ONTAINS\x10\x01\x42\x0c\n\nvalue_mode\"i\n\nQueryScope\x12\x1b\n\x17QUERY_SCOPE_UNSPECIFIED\x10\x00\x12\x0e\n\nCOLLECTION\x10\x01\x12\x14\n\x10\x43OLLECTION_GROUP\x10\x02\x12\x18\n\x14\x43OLLECTION_RECURSIVE\x10\x03\"/\n\x08\x41piScope\x12\x0b\n\x07\x41NY_API\x10\x00\x12\x16\n\x12\x44\x41TASTORE_MODE_API\x10\x01\"I\n\x05State\x12\x15\n\x11STATE_UNSPECIFIED\x10\x00\x12\x0c\n\x08\x43REATING\x10\x01\x12\t\n\x05READY\x10\x02\x12\x10\n\x0cNEEDS_REPAIR\x10\x03:z\xea\x41w\n\x1e\x66irestore.googleapis.com/Index\x12Uprojects/{project}/databases/{database}/collectionGroups/{collection}/indexes/{index}B\xd9\x01\n\x1d\x63om.google.firestore.admin.v1B\nIndexProtoP\x01Z9cloud.google.com/go/firestore/apiv1/admin/adminpb;adminpb\xa2\x02\x04GCFS\xaa\x02\x1fGoogle.Cloud.Firestore.Admin.V1\xca\x02\x1fGoogle\\Cloud\\Firestore\\Admin\\V1\xea\x02#Google::Cloud::Firestore::Admin::V1b\x06proto3"
+descriptor_data = "\n%google/firestore/admin/v1/index.proto\x12\x19google.firestore.admin.v1\x1a\x1fgoogle/api/field_behavior.proto\x1a\x19google/api/resource.proto\"\x91\t\n\x05Index\x12\x0c\n\x04name\x18\x01 \x01(\t\x12@\n\x0bquery_scope\x18\x02 \x01(\x0e\x32+.google.firestore.admin.v1.Index.QueryScope\x12<\n\tapi_scope\x18\x05 \x01(\x0e\x32).google.firestore.admin.v1.Index.ApiScope\x12;\n\x06\x66ields\x18\x03 \x03(\x0b\x32+.google.firestore.admin.v1.Index.IndexField\x12\x35\n\x05state\x18\x04 \x01(\x0e\x32&.google.firestore.admin.v1.Index.State\x1a\xa2\x04\n\nIndexField\x12\x12\n\nfield_path\x18\x01 \x01(\t\x12\x42\n\x05order\x18\x02 \x01(\x0e\x32\x31.google.firestore.admin.v1.Index.IndexField.OrderH\x00\x12O\n\x0c\x61rray_config\x18\x03 \x01(\x0e\x32\x37.google.firestore.admin.v1.Index.IndexField.ArrayConfigH\x00\x12Q\n\rvector_config\x18\x04 \x01(\x0b\x32\x38.google.firestore.admin.v1.Index.IndexField.VectorConfigH\x00\x1a\x8f\x01\n\x0cVectorConfig\x12\x16\n\tdimension\x18\x01 \x01(\x05\x42\x03\xe0\x41\x02\x12R\n\x04\x66lat\x18\x02 \x01(\x0b\x32\x42.google.firestore.admin.v1.Index.IndexField.VectorConfig.FlatIndexH\x00\x1a\x0b\n\tFlatIndexB\x06\n\x04type\"=\n\x05Order\x12\x15\n\x11ORDER_UNSPECIFIED\x10\x00\x12\r\n\tASCENDING\x10\x01\x12\x0e\n\nDESCENDING\x10\x02\"9\n\x0b\x41rrayConfig\x12\x1c\n\x18\x41RRAY_CONFIG_UNSPECIFIED\x10\x00\x12\x0c\n\x08\x43ONTAINS\x10\x01\x42\x0c\n\nvalue_mode\"i\n\nQueryScope\x12\x1b\n\x17QUERY_SCOPE_UNSPECIFIED\x10\x00\x12\x0e\n\nCOLLECTION\x10\x01\x12\x14\n\x10\x43OLLECTION_GROUP\x10\x02\x12\x18\n\x14\x43OLLECTION_RECURSIVE\x10\x03\"/\n\x08\x41piScope\x12\x0b\n\x07\x41NY_API\x10\x00\x12\x16\n\x12\x44\x41TASTORE_MODE_API\x10\x01\"I\n\x05State\x12\x15\n\x11STATE_UNSPECIFIED\x10\x00\x12\x0c\n\x08\x43REATING\x10\x01\x12\t\n\x05READY\x10\x02\x12\x10\n\x0cNEEDS_REPAIR\x10\x03:z\xea\x41w\n\x1e\x66irestore.googleapis.com/Index\x12Uprojects/{project}/databases/{database}/collectionGroups/{collection}/indexes/{index}B\xd9\x01\n\x1d\x63om.google.firestore.admin.v1B\nIndexProtoP\x01Z9cloud.google.com/go/firestore/apiv1/admin/adminpb;adminpb\xa2\x02\x04GCFS\xaa\x02\x1fGoogle.Cloud.Firestore.Admin.V1\xca\x02\x1fGoogle\\Cloud\\Firestore\\Admin\\V1\xea\x02#Google::Cloud::Firestore::Admin::V1b\x06proto3"
 
 pool = Google::Protobuf::DescriptorPool.generated_pool
 
@@ -40,6 +41,8 @@ module Admin
         module V1
           Index = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("google.firestore.admin.v1.Index").msgclass
           Index::IndexField = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("google.firestore.admin.v1.Index.IndexField").msgclass
+          Index::IndexField::VectorConfig = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("google.firestore.admin.v1.Index.IndexField.VectorConfig").msgclass
+          Index::IndexField::VectorConfig::FlatIndex = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("google.firestore.admin.v1.Index.IndexField.VectorConfig.FlatIndex").msgclass
           Index::IndexField::Order = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("google.firestore.admin.v1.Index.IndexField.Order").enummodule
           Index::IndexField::ArrayConfig = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("google.firestore.admin.v1.Index.IndexField.ArrayConfig").enummodule
           Index::QueryScope = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("google.firestore.admin.v1.Index.QueryScope").enummodule
diff --git a/google-cloud-firestore-admin-v1/proto_docs/google/firestore/admin/v1/index.rb b/google-cloud-firestore-admin-v1/proto_docs/google/firestore/admin/v1/index.rb
index 59c3db7693b5..a31ddc8e9a83 100644
--- a/google-cloud-firestore-admin-v1/proto_docs/google/firestore/admin/v1/index.rb
+++ b/google-cloud-firestore-admin-v1/proto_docs/google/firestore/admin/v1/index.rb
@@ -77,10 +77,36 @@ class Index
             # @!attribute [rw] array_config
             #   @return [::Google::Cloud::Firestore::Admin::V1::Index::IndexField::ArrayConfig]
             #     Indicates that this field supports operations on `array_value`s.
+            # @!attribute [rw] vector_config
+            #   @return [::Google::Cloud::Firestore::Admin::V1::Index::IndexField::VectorConfig]
+            #     Indicates that this field supports nearest neighbors and distance
+            #     operations on vector.
             class IndexField
               include ::Google::Protobuf::MessageExts
               extend ::Google::Protobuf::MessageExts::ClassMethods
 
+              # The index configuration to support vector search operations
+              # @!attribute [rw] dimension
+              #   @return [::Integer]
+              #     Required. The vector dimension this configuration applies to.
+              #
+              #     The resulting index will only include vectors of this dimension, and
+              #     can be used for vector search with the same dimension.
+              # @!attribute [rw] flat
+              #   @return [::Google::Cloud::Firestore::Admin::V1::Index::IndexField::VectorConfig::FlatIndex]
+              #     Indicates the vector index is a flat index.
+              class VectorConfig
+                include ::Google::Protobuf::MessageExts
+                extend ::Google::Protobuf::MessageExts::ClassMethods
+
+                # An index that stores vectors in a flat data structure, and supports
+                # exhaustive search.
+                class FlatIndex
+                  include ::Google::Protobuf::MessageExts
+                  extend ::Google::Protobuf::MessageExts::ClassMethods
+                end
+              end
+
               # The supported orderings.
               module Order
                 # The ordering is unspecified. Not a valid option.