diff --git a/baselines/bigquery-storage/src/v1beta1/big_query_storage_client.ts.baseline b/baselines/bigquery-storage/src/v1beta1/big_query_storage_client.ts.baseline
index 878cdeb02..1293d8e8d 100644
--- a/baselines/bigquery-storage/src/v1beta1/big_query_storage_client.ts.baseline
+++ b/baselines/bigquery-storage/src/v1beta1/big_query_storage_client.ts.baseline
@@ -62,8 +62,6 @@ export class BigQueryStorageClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/dlp/src/v2/dlp_service_client.ts.baseline b/baselines/dlp/src/v2/dlp_service_client.ts.baseline
index 4590b416b..17e89de52 100644
--- a/baselines/dlp/src/v2/dlp_service_client.ts.baseline
+++ b/baselines/dlp/src/v2/dlp_service_client.ts.baseline
@@ -69,8 +69,6 @@ export class DlpServiceClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/kms/src/v1/key_management_service_client.ts.baseline b/baselines/kms/src/v1/key_management_service_client.ts.baseline
index 1a92dc14c..06d1b4407 100644
--- a/baselines/kms/src/v1/key_management_service_client.ts.baseline
+++ b/baselines/kms/src/v1/key_management_service_client.ts.baseline
@@ -70,8 +70,6 @@ export class KeyManagementServiceClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/monitoring/src/v3/alert_policy_service_client.ts.baseline b/baselines/monitoring/src/v3/alert_policy_service_client.ts.baseline
index 3a220fd38..5555a338f 100644
--- a/baselines/monitoring/src/v3/alert_policy_service_client.ts.baseline
+++ b/baselines/monitoring/src/v3/alert_policy_service_client.ts.baseline
@@ -69,8 +69,6 @@ export class AlertPolicyServiceClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/monitoring/src/v3/group_service_client.ts.baseline b/baselines/monitoring/src/v3/group_service_client.ts.baseline
index dd057c86e..96873934d 100644
--- a/baselines/monitoring/src/v3/group_service_client.ts.baseline
+++ b/baselines/monitoring/src/v3/group_service_client.ts.baseline
@@ -72,8 +72,6 @@ export class GroupServiceClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/monitoring/src/v3/metric_service_client.ts.baseline b/baselines/monitoring/src/v3/metric_service_client.ts.baseline
index 15bf8586a..a9a9468bc 100644
--- a/baselines/monitoring/src/v3/metric_service_client.ts.baseline
+++ b/baselines/monitoring/src/v3/metric_service_client.ts.baseline
@@ -62,8 +62,6 @@ export class MetricServiceClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/monitoring/src/v3/notification_channel_service_client.ts.baseline b/baselines/monitoring/src/v3/notification_channel_service_client.ts.baseline
index 6cbd0a859..4a49ca955 100644
--- a/baselines/monitoring/src/v3/notification_channel_service_client.ts.baseline
+++ b/baselines/monitoring/src/v3/notification_channel_service_client.ts.baseline
@@ -62,8 +62,6 @@ export class NotificationChannelServiceClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/monitoring/src/v3/service_monitoring_service_client.ts.baseline b/baselines/monitoring/src/v3/service_monitoring_service_client.ts.baseline
index b0f487f74..090422f82 100644
--- a/baselines/monitoring/src/v3/service_monitoring_service_client.ts.baseline
+++ b/baselines/monitoring/src/v3/service_monitoring_service_client.ts.baseline
@@ -64,8 +64,6 @@ export class ServiceMonitoringServiceClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/monitoring/src/v3/uptime_check_service_client.ts.baseline b/baselines/monitoring/src/v3/uptime_check_service_client.ts.baseline
index 2e5537f54..58edbbce7 100644
--- a/baselines/monitoring/src/v3/uptime_check_service_client.ts.baseline
+++ b/baselines/monitoring/src/v3/uptime_check_service_client.ts.baseline
@@ -68,8 +68,6 @@ export class UptimeCheckServiceClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/redis/src/v1beta1/cloud_redis_client.ts.baseline b/baselines/redis/src/v1beta1/cloud_redis_client.ts.baseline
index ababe81cf..cd56952de 100644
--- a/baselines/redis/src/v1beta1/cloud_redis_client.ts.baseline
+++ b/baselines/redis/src/v1beta1/cloud_redis_client.ts.baseline
@@ -76,8 +76,6 @@ export class CloudRedisClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/showcase/src/v1beta1/echo_client.ts.baseline b/baselines/showcase/src/v1beta1/echo_client.ts.baseline
index ce19047e5..677197ee9 100644
--- a/baselines/showcase/src/v1beta1/echo_client.ts.baseline
+++ b/baselines/showcase/src/v1beta1/echo_client.ts.baseline
@@ -66,8 +66,6 @@ export class EchoClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/showcase/src/v1beta1/identity_client.ts.baseline b/baselines/showcase/src/v1beta1/identity_client.ts.baseline
index b716d4d42..7ad1b70c0 100644
--- a/baselines/showcase/src/v1beta1/identity_client.ts.baseline
+++ b/baselines/showcase/src/v1beta1/identity_client.ts.baseline
@@ -61,8 +61,6 @@ export class IdentityClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/showcase/src/v1beta1/messaging_client.ts.baseline b/baselines/showcase/src/v1beta1/messaging_client.ts.baseline
index a1652aedc..e2e4a0c3b 100644
--- a/baselines/showcase/src/v1beta1/messaging_client.ts.baseline
+++ b/baselines/showcase/src/v1beta1/messaging_client.ts.baseline
@@ -65,8 +65,6 @@ export class MessagingClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/showcase/src/v1beta1/testing_client.ts.baseline b/baselines/showcase/src/v1beta1/testing_client.ts.baseline
index 4a4afa5b4..13e45bd8b 100644
--- a/baselines/showcase/src/v1beta1/testing_client.ts.baseline
+++ b/baselines/showcase/src/v1beta1/testing_client.ts.baseline
@@ -62,8 +62,6 @@ export class TestingClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/texttospeech/src/v1/text_to_speech_client.ts.baseline b/baselines/texttospeech/src/v1/text_to_speech_client.ts.baseline
index 414e83565..0656889b4 100644
--- a/baselines/texttospeech/src/v1/text_to_speech_client.ts.baseline
+++ b/baselines/texttospeech/src/v1/text_to_speech_client.ts.baseline
@@ -59,8 +59,6 @@ export class TextToSpeechClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/baselines/translate/src/v3beta1/translation_service_client.ts.baseline b/baselines/translate/src/v3beta1/translation_service_client.ts.baseline
index 57328a1e8..012c9265f 100644
--- a/baselines/translate/src/v3beta1/translation_service_client.ts.baseline
+++ b/baselines/translate/src/v3beta1/translation_service_client.ts.baseline
@@ -62,8 +62,6 @@ export class TranslationServiceClient {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */
diff --git a/templates/typescript_gapic/src/$version/$service_client.ts.njk b/templates/typescript_gapic/src/$version/$service_client.ts.njk
index 8b0781e08..5917a2e88 100644
--- a/templates/typescript_gapic/src/$version/$service_client.ts.njk
+++ b/templates/typescript_gapic/src/$version/$service_client.ts.njk
@@ -73,8 +73,6 @@ export class {{ service.name }}Client {
    *     app is running in an environment which supports
    *     {@link https://developers.google.com/identity/protocols/application-default-credentials Application Default Credentials},
    *     your project ID will be detected automatically.
-   * @param {function} [options.promise] - Custom promise module to use instead
-   *     of native Promises.
    * @param {string} [options.apiEndpoint] - The domain name of the
    *     API remote host.
    */