diff --git a/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/MaintenanceWindow.java b/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/MaintenanceWindow.java
index c2b2469b..34263a6c 100644
--- a/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/MaintenanceWindow.java
+++ b/proto-google-cloud-orchestration-airflow-v1beta1/src/main/java/com/google/cloud/orchestration/airflow/service/v1beta1/MaintenanceWindow.java
@@ -24,11 +24,13 @@
  * <pre>
  * The configuration settings for Cloud Composer maintenance window.
  * The following example:
+ * ```
  *    {
  *      "startTime":"2019-08-01T01:00:00Z"
  *      "endTime":"2019-08-01T07:00:00Z"
  *      "recurrence":"FREQ=WEEKLY;BYDAY=TU,WE"
  *    }
+ * ```
  * would define a maintenance window between 01 and 07 hours UTC during
  * each Tuesday and Wednesday.
  * </pre>
@@ -501,11 +503,13 @@ protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.Build
    * <pre>
    * The configuration settings for Cloud Composer maintenance window.
    * The following example:
+   * ```
    *    {
    *      "startTime":"2019-08-01T01:00:00Z"
    *      "endTime":"2019-08-01T07:00:00Z"
    *      "recurrence":"FREQ=WEEKLY;BYDAY=TU,WE"
    *    }
+   * ```
    * would define a maintenance window between 01 and 07 hours UTC during
    * each Tuesday and Wednesday.
    * </pre>
diff --git a/proto-google-cloud-orchestration-airflow-v1beta1/src/main/proto/google/cloud/orchestration/airflow/service/v1beta1/environments.proto b/proto-google-cloud-orchestration-airflow-v1beta1/src/main/proto/google/cloud/orchestration/airflow/service/v1beta1/environments.proto
index 349e927b..a96a417f 100644
--- a/proto-google-cloud-orchestration-airflow-v1beta1/src/main/proto/google/cloud/orchestration/airflow/service/v1beta1/environments.proto
+++ b/proto-google-cloud-orchestration-airflow-v1beta1/src/main/proto/google/cloud/orchestration/airflow/service/v1beta1/environments.proto
@@ -760,11 +760,13 @@ message EncryptionConfig {
 // The configuration settings for Cloud Composer maintenance window.
 // The following example:
 //
+// ```
 //    {
 //      "startTime":"2019-08-01T01:00:00Z"
 //      "endTime":"2019-08-01T07:00:00Z"
 //      "recurrence":"FREQ=WEEKLY;BYDAY=TU,WE"
 //    }
+// ```
 //
 // would define a maintenance window between 01 and 07 hours UTC during
 // each Tuesday and Wednesday.