diff --git a/generated/google/apis/genomics_v2alpha1.rb b/generated/google/apis/genomics_v2alpha1.rb
index 64f44c411..e94c76f29 100644
--- a/generated/google/apis/genomics_v2alpha1.rb
+++ b/generated/google/apis/genomics_v2alpha1.rb
@@ -25,7 +25,7 @@ module Google
     # @see https://cloud.google.com/genomics
     module GenomicsV2alpha1
       VERSION = 'V2alpha1'
-      REVISION = '20201102'
+      REVISION = '20201207'
 
       # View and manage your data across Google Cloud Platform services
       AUTH_CLOUD_PLATFORM = 'https://www.googleapis.com/auth/cloud-platform'
diff --git a/generated/google/apis/genomics_v2alpha1/classes.rb b/generated/google/apis/genomics_v2alpha1/classes.rb
index cf1320be9..749868422 100644
--- a/generated/google/apis/genomics_v2alpha1/classes.rb
+++ b/generated/google/apis/genomics_v2alpha1/classes.rb
@@ -132,8 +132,8 @@ module Google
       
         # An optional name for the container. The container hostname will be set to this
         # name, making it useful for inter-container communication. The name must
-        # contain only upper and lowercase alphanumeric characters and hypens and cannot
-        # start with a hyphen.
+        # contain only upper and lowercase alphanumeric characters and hyphens and
+        # cannot start with a hyphen.
         # Corresponds to the JSON property `name`
         # @return [String]
         attr_accessor :name
@@ -447,13 +447,14 @@ module Google
       
       # Carries information about a disk that can be attached to a VM. See https://
       # cloud.google.com/compute/docs/disks/performance for more information about
-      # disk type, size, and performance considerations.
+      # disk type, size, and performance considerations. Specify either `Volume` or `
+      # Disk`, but not both.
       class Disk
         include Google::Apis::Core::Hashable
       
         # A user-supplied name for the disk. Used when mounting the disk into actions.
         # The name must contain only upper and lowercase alphanumeric characters and
-        # hypens and cannot start with a hyphen.
+        # hyphens and cannot start with a hyphen.
         # Corresponds to the JSON property `name`
         # @return [String]
         attr_accessor :name
@@ -1357,7 +1358,8 @@ module Google
         # @return [String]
         attr_accessor :cpu_platform
       
-        # The list of disks to create and attach to the VM.
+        # The list of disks to create and attach to the VM. Specify either the `volumes[]
+        # ` field or the `disks[]` field, but not both.
         # Corresponds to the JSON property `disks`
         # @return [Array<Google::Apis::GenomicsV2alpha1::Disk>]
         attr_accessor :disks
@@ -1424,7 +1426,8 @@ module Google
         # @return [Google::Apis::GenomicsV2alpha1::ServiceAccount]
         attr_accessor :service_account
       
-        # The list of disks and other storage to create or attach to the VM.
+        # The list of disks and other storage to create or attach to the VM. Specify
+        # either the `volumes[]` field or the `disks[]` field, but not both.
         # Corresponds to the JSON property `volumes`
         # @return [Array<Google::Apis::GenomicsV2alpha1::Volume>]
         attr_accessor :volumes
@@ -1452,7 +1455,8 @@ module Google
         end
       end
       
-      # Carries information about storage that can be attached to a VM.
+      # Carries information about storage that can be attached to a VM. Specify either
+      # `Volume` or `Disk`, but not both.
       class Volume
         include Google::Apis::Core::Hashable
       
diff --git a/generated/google/apis/genomics_v2alpha1/synth.metadata b/generated/google/apis/genomics_v2alpha1/synth.metadata
index 11f111610..2390b25d9 100644
--- a/generated/google/apis/genomics_v2alpha1/synth.metadata
+++ b/generated/google/apis/genomics_v2alpha1/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/google-api-ruby-client.git",
-        "sha": "64251b516a71bd1bdcc1a7d3ac934182b38a11a7"
+        "sha": "630daeb01cf2e001b4d87f4896680a249827ec19"
       }
     }
   ]