diff --git a/packages/google-devtools-containeranalysis/samples/generated/v1/container_analysis.get_iam_policy.js b/packages/google-devtools-containeranalysis/samples/generated/v1/container_analysis.get_iam_policy.js
index ddf75efcdab..d6f70bfe8e8 100644
--- a/packages/google-devtools-containeranalysis/samples/generated/v1/container_analysis.get_iam_policy.js
+++ b/packages/google-devtools-containeranalysis/samples/generated/v1/container_analysis.get_iam_policy.js
@@ -32,7 +32,7 @@ function main(resource) {
   // const resource = 'abc123'
   /**
    *  OPTIONAL: A `GetPolicyOptions` object for specifying options to
-   *  `GetIamPolicy`. This field is only used by Cloud IAM.
+   *  `GetIamPolicy`.
    */
   // const options = {}
 
diff --git a/packages/google-devtools-containeranalysis/samples/generated/v1/container_analysis.set_iam_policy.js b/packages/google-devtools-containeranalysis/samples/generated/v1/container_analysis.set_iam_policy.js
index 032fd1a1e65..1c5d87cb9c4 100644
--- a/packages/google-devtools-containeranalysis/samples/generated/v1/container_analysis.set_iam_policy.js
+++ b/packages/google-devtools-containeranalysis/samples/generated/v1/container_analysis.set_iam_policy.js
@@ -37,6 +37,13 @@ function main(resource, policy) {
    *  might reject them.
    */
   // const policy = {}
+  /**
+   *  OPTIONAL: A FieldMask specifying which fields of the policy to modify. Only
+   *  the fields in the mask will be modified. If no mask is provided, the
+   *  following default mask is used:
+   *  `paths: "bindings, etag"`
+   */
+  // const updateMask = {}
 
   // Imports the Containeranalysis library
   const {ContainerAnalysisClient} = require('@google-cloud/containeranalysis').v1;
diff --git a/packages/google-devtools-containeranalysis/samples/generated/v1/snippet_metadata.google.devtools.containeranalysis.v1.json b/packages/google-devtools-containeranalysis/samples/generated/v1/snippet_metadata.google.devtools.containeranalysis.v1.json
index 0de577c540f..8bc0ca70c46 100644
--- a/packages/google-devtools-containeranalysis/samples/generated/v1/snippet_metadata.google.devtools.containeranalysis.v1.json
+++ b/packages/google-devtools-containeranalysis/samples/generated/v1/snippet_metadata.google.devtools.containeranalysis.v1.json
@@ -22,7 +22,7 @@
       "segments": [
         {
           "start": 25,
-          "end": 59,
+          "end": 66,
           "type": "FULL"
         }
       ],
@@ -38,6 +38,10 @@
           {
             "name": "policy",
             "type": ".google.iam.v1.Policy"
+          },
+          {
+            "name": "update_mask",
+            "type": ".google.protobuf.FieldMask"
           }
         ],
         "resultType": ".google.iam.v1.Policy",
diff --git a/packages/google-devtools-containeranalysis/samples/generated/v1beta1/container_analysis_v1_beta1.get_iam_policy.js b/packages/google-devtools-containeranalysis/samples/generated/v1beta1/container_analysis_v1_beta1.get_iam_policy.js
index bb638d5b7fc..51b7e129296 100644
--- a/packages/google-devtools-containeranalysis/samples/generated/v1beta1/container_analysis_v1_beta1.get_iam_policy.js
+++ b/packages/google-devtools-containeranalysis/samples/generated/v1beta1/container_analysis_v1_beta1.get_iam_policy.js
@@ -32,7 +32,7 @@ function main(resource) {
   // const resource = 'abc123'
   /**
    *  OPTIONAL: A `GetPolicyOptions` object for specifying options to
-   *  `GetIamPolicy`. This field is only used by Cloud IAM.
+   *  `GetIamPolicy`.
    */
   // const options = {}
 
diff --git a/packages/google-devtools-containeranalysis/samples/generated/v1beta1/container_analysis_v1_beta1.set_iam_policy.js b/packages/google-devtools-containeranalysis/samples/generated/v1beta1/container_analysis_v1_beta1.set_iam_policy.js
index 099ca29711e..a1248b9d1cd 100644
--- a/packages/google-devtools-containeranalysis/samples/generated/v1beta1/container_analysis_v1_beta1.set_iam_policy.js
+++ b/packages/google-devtools-containeranalysis/samples/generated/v1beta1/container_analysis_v1_beta1.set_iam_policy.js
@@ -37,6 +37,13 @@ function main(resource, policy) {
    *  might reject them.
    */
   // const policy = {}
+  /**
+   *  OPTIONAL: A FieldMask specifying which fields of the policy to modify. Only
+   *  the fields in the mask will be modified. If no mask is provided, the
+   *  following default mask is used:
+   *  `paths: "bindings, etag"`
+   */
+  // const updateMask = {}
 
   // Imports the Containeranalysis library
   const {ContainerAnalysisV1Beta1Client} = require('@google-cloud/containeranalysis').v1beta1;
diff --git a/packages/google-devtools-containeranalysis/samples/generated/v1beta1/snippet_metadata.google.devtools.containeranalysis.v1beta1.json b/packages/google-devtools-containeranalysis/samples/generated/v1beta1/snippet_metadata.google.devtools.containeranalysis.v1beta1.json
index 4d9051f9a97..6f7533d5b89 100644
--- a/packages/google-devtools-containeranalysis/samples/generated/v1beta1/snippet_metadata.google.devtools.containeranalysis.v1beta1.json
+++ b/packages/google-devtools-containeranalysis/samples/generated/v1beta1/snippet_metadata.google.devtools.containeranalysis.v1beta1.json
@@ -22,7 +22,7 @@
       "segments": [
         {
           "start": 25,
-          "end": 59,
+          "end": 66,
           "type": "FULL"
         }
       ],
@@ -38,6 +38,10 @@
           {
             "name": "policy",
             "type": ".google.iam.v1.Policy"
+          },
+          {
+            "name": "update_mask",
+            "type": ".google.protobuf.FieldMask"
           }
         ],
         "resultType": ".google.iam.v1.Policy",
diff --git a/packages/google-devtools-containeranalysis/src/v1/container_analysis_client.ts b/packages/google-devtools-containeranalysis/src/v1/container_analysis_client.ts
index 3c47c4f151d..18db69e9a66 100644
--- a/packages/google-devtools-containeranalysis/src/v1/container_analysis_client.ts
+++ b/packages/google-devtools-containeranalysis/src/v1/container_analysis_client.ts
@@ -336,6 +336,12 @@ export class ContainerAnalysisClient {
    *   the policy is limited to a few 10s of KB. An empty policy is a
    *   valid policy but certain Cloud Platform services (such as Projects)
    *   might reject them.
+   * @param {google.protobuf.FieldMask} request.updateMask
+   *   OPTIONAL: A FieldMask specifying which fields of the policy to modify. Only
+   *   the fields in the mask will be modified. If no mask is provided, the
+   *   following default mask is used:
+   *
+   *   `paths: "bindings, etag"`
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
@@ -429,7 +435,7 @@ export class ContainerAnalysisClient {
    *   See the operation documentation for the appropriate value for this field.
    * @param {google.iam.v1.GetPolicyOptions} request.options
    *   OPTIONAL: A `GetPolicyOptions` object for specifying options to
-   *   `GetIamPolicy`. This field is only used by Cloud IAM.
+   *   `GetIamPolicy`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
diff --git a/packages/google-devtools-containeranalysis/src/v1beta1/container_analysis_v1_beta1_client.ts b/packages/google-devtools-containeranalysis/src/v1beta1/container_analysis_v1_beta1_client.ts
index 0105773d197..cda8466aa56 100644
--- a/packages/google-devtools-containeranalysis/src/v1beta1/container_analysis_v1_beta1_client.ts
+++ b/packages/google-devtools-containeranalysis/src/v1beta1/container_analysis_v1_beta1_client.ts
@@ -355,6 +355,12 @@ export class ContainerAnalysisV1Beta1Client {
    *   the policy is limited to a few 10s of KB. An empty policy is a
    *   valid policy but certain Cloud Platform services (such as Projects)
    *   might reject them.
+   * @param {google.protobuf.FieldMask} request.updateMask
+   *   OPTIONAL: A FieldMask specifying which fields of the policy to modify. Only
+   *   the fields in the mask will be modified. If no mask is provided, the
+   *   following default mask is used:
+   *
+   *   `paths: "bindings, etag"`
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
@@ -448,7 +454,7 @@ export class ContainerAnalysisV1Beta1Client {
    *   See the operation documentation for the appropriate value for this field.
    * @param {google.iam.v1.GetPolicyOptions} request.options
    *   OPTIONAL: A `GetPolicyOptions` object for specifying options to
-   *   `GetIamPolicy`. This field is only used by Cloud IAM.
+   *   `GetIamPolicy`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.