diff --git a/clients/google-api-services-chat/v1/2.0.0/README.md b/clients/google-api-services-chat/v1/2.0.0/README.md
index fa221d5e592..a5d8a97175e 100644
--- a/clients/google-api-services-chat/v1/2.0.0/README.md
+++ b/clients/google-api-services-chat/v1/2.0.0/README.md
@@ -22,7 +22,7 @@ Add the following lines to your `pom.xml` file:
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-chat</artifactId>
-      <version>v1-rev20260726-2.0.0</version>
+      <version>v1-rev20260728-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-chat:v1-rev20260726-2.0.0'
+  implementation 'com.google.apis:google-api-services-chat:v1-rev20260728-2.0.0'
 }
 ```
 
diff --git a/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/HangoutsChat.java b/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/HangoutsChat.java
index 0ea5c57baff..bca8abe8b0a 100644
--- a/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/HangoutsChat.java
+++ b/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/HangoutsChat.java
@@ -3003,10 +3003,10 @@ public Patch set(String parameterName, Object value) {
      * manage spaces](https://developers.google.com/workspace/chat/search-manage-admin). When
      * `use_admin_access` is set to `false`, the results are limited to spaces where the calling user is
      * a joined member. To search with administrator privileges, set `use_admin_access` to `true`.
-     * Setting `use_admin_access` to `false` is available under Developer Preview. Supports the
-     * following types of [authentication](https://developers.google.com/workspace/chat/authenticate-
-     * authorize): - [User authentication](https://developers.google.com/workspace/chat/authenticate-
-     * authorize-chat-user) with one of the following authorization scopes: -
+     * Supports the following types of
+     * [authentication](https://developers.google.com/workspace/chat/authenticate-authorize): - [User
+     * authentication](https://developers.google.com/workspace/chat/authenticate-authorize-chat-user)
+     * with one of the following authorization scopes: -
      * `https://www.googleapis.com/auth/chat.spaces.readonly` -
      * `https://www.googleapis.com/auth/chat.spaces` - [User authentication with administrator
      * privileges](https://developers.google.com/workspace/chat/authenticate-authorize-chat-user#admin-
@@ -3037,10 +3037,10 @@ public class Search extends HangoutsChatRequest<com.google.api.services.chat.v1.
        * and manage spaces](https://developers.google.com/workspace/chat/search-manage-admin). When
        * `use_admin_access` is set to `false`, the results are limited to spaces where the calling user
        * is a joined member. To search with administrator privileges, set `use_admin_access` to `true`.
-       * Setting `use_admin_access` to `false` is available under Developer Preview. Supports the
-       * following types of [authentication](https://developers.google.com/workspace/chat/authenticate-
-       * authorize): - [User authentication](https://developers.google.com/workspace/chat/authenticate-
-       * authorize-chat-user) with one of the following authorization scopes: -
+       * Supports the following types of
+       * [authentication](https://developers.google.com/workspace/chat/authenticate-authorize): - [User
+       * authentication](https://developers.google.com/workspace/chat/authenticate-authorize-chat-user)
+       * with one of the following authorization scopes: -
        * `https://www.googleapis.com/auth/chat.spaces.readonly` -
        * `https://www.googleapis.com/auth/chat.spaces` - [User authentication with administrator
        * privileges](https://developers.google.com/workspace/chat/authenticate-authorize-chat-
@@ -3373,8 +3373,7 @@ public Search setQuery(java.lang.String query) {
        * conversations privilege](https://support.google.com/a/answer/13369245). Requires either the
        * `chat.admin.spaces.readonly` or `chat.admin.spaces` [OAuth 2.0
        * scope](https://developers.google.com/workspace/chat/authenticate-authorize#chat-api-
-       * scopes). Setting `use_admin_access` to `false` is available under Developer Preview.
-       * [Developer Preview](https://developers.google.com/workspace/preview).
+       * scopes).
        */
       @com.google.api.client.util.Key
       private java.lang.Boolean useAdminAccess;
@@ -3384,8 +3383,6 @@ public Search setQuery(java.lang.String query) {
      conversations privilege](https://support.google.com/a/answer/13369245). Requires either the
      `chat.admin.spaces.readonly` or `chat.admin.spaces` [OAuth 2.0
      scope](https://developers.google.com/workspace/chat/authenticate-authorize#chat-api-scopes).
-     Setting `use_admin_access` to `false` is available under Developer Preview. [Developer
-     Preview](https://developers.google.com/workspace/preview).
        */
       public java.lang.Boolean getUseAdminAccess() {
         return useAdminAccess;
@@ -3397,8 +3394,7 @@ public java.lang.Boolean getUseAdminAccess() {
        * conversations privilege](https://support.google.com/a/answer/13369245). Requires either the
        * `chat.admin.spaces.readonly` or `chat.admin.spaces` [OAuth 2.0
        * scope](https://developers.google.com/workspace/chat/authenticate-authorize#chat-api-
-       * scopes). Setting `use_admin_access` to `false` is available under Developer Preview.
-       * [Developer Preview](https://developers.google.com/workspace/preview).
+       * scopes).
        */
       public Search setUseAdminAccess(java.lang.Boolean useAdminAccess) {
         this.useAdminAccess = useAdminAccess;
@@ -5640,6 +5636,28 @@ public Get setName(java.lang.String name) {
           return this;
         }
 
+        /**
+         * Optional. Specifies the desired output syntax for the Chat message `formatted_text`
+         * field.
+         */
+        @com.google.api.client.util.Key
+        private java.lang.String markupSyntax;
+
+        /** Optional. Specifies the desired output syntax for the Chat message `formatted_text` field.
+         */
+        public java.lang.String getMarkupSyntax() {
+          return markupSyntax;
+        }
+
+        /**
+         * Optional. Specifies the desired output syntax for the Chat message `formatted_text`
+         * field.
+         */
+        public Get setMarkupSyntax(java.lang.String markupSyntax) {
+          this.markupSyntax = markupSyntax;
+          return this;
+        }
+
         @Override
         public Get set(String parameterName, Object value) {
           return (Get) super.set(parameterName, value);
@@ -5874,6 +5892,28 @@ public List setFilter(java.lang.String filter) {
           return this;
         }
 
+        /**
+         * Optional. Specifies the desired output syntax for the Chat message `formatted_text`
+         * field.
+         */
+        @com.google.api.client.util.Key
+        private java.lang.String markupSyntax;
+
+        /** Optional. Specifies the desired output syntax for the Chat message `formatted_text` field.
+         */
+        public java.lang.String getMarkupSyntax() {
+          return markupSyntax;
+        }
+
+        /**
+         * Optional. Specifies the desired output syntax for the Chat message `formatted_text`
+         * field.
+         */
+        public List setMarkupSyntax(java.lang.String markupSyntax) {
+          this.markupSyntax = markupSyntax;
+          return this;
+        }
+
         /**
          * Optional. How the list of messages is ordered. Specify a value to order by an ordering
          * operation. Valid ordering operation values are as follows: - `ASC` for ascending. -
diff --git a/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/Message.java b/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/Message.java
index 310097e42c9..e502185f8d2 100644
--- a/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/Message.java
+++ b/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/Message.java
@@ -225,6 +225,13 @@ public final class Message extends com.google.api.client.json.GenericJson {
   @com.google.api.client.util.Key
   private String lastUpdateTime;
 
+  /**
+   * Optional. Specifies how the server interprets the message `text` field content.
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String markupSyntax;
+
   /**
    * Output only. A URL in the Chat message `text` field that matches a link preview pattern. For
    * more information, see [Preview links](https://developers.google.com/workspace/chat/preview-
@@ -694,6 +701,23 @@ public Message setLastUpdateTime(String lastUpdateTime) {
     return this;
   }
 
+  /**
+   * Optional. Specifies how the server interprets the message `text` field content.
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getMarkupSyntax() {
+    return markupSyntax;
+  }
+
+  /**
+   * Optional. Specifies how the server interprets the message `text` field content.
+   * @param markupSyntax markupSyntax or {@code null} for none
+   */
+  public Message setMarkupSyntax(java.lang.String markupSyntax) {
+    this.markupSyntax = markupSyntax;
+    return this;
+  }
+
   /**
    * Output only. A URL in the Chat message `text` field that matches a link preview pattern. For
    * more information, see [Preview links](https://developers.google.com/workspace/chat/preview-
diff --git a/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchMessagesRequest.java b/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchMessagesRequest.java
index 4548bbedfa3..0f2fde114f3 100644
--- a/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchMessagesRequest.java
+++ b/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchMessagesRequest.java
@@ -96,6 +96,13 @@ public final class SearchMessagesRequest extends com.google.api.client.json.Gene
   @com.google.api.client.util.Key
   private java.lang.String filter;
 
+  /**
+   * Optional. Specifies the desired output syntax for the Chat message `formatted_text` field.
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String markupSyntax;
+
   /**
    * Optional. How the results list is ordered. Supported attributes to order by are: -
    * `create_time`: Sorts the results by the time of the message creation. Default value. -
@@ -272,6 +279,23 @@ public SearchMessagesRequest setFilter(java.lang.String filter) {
     return this;
   }
 
+  /**
+   * Optional. Specifies the desired output syntax for the Chat message `formatted_text` field.
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getMarkupSyntax() {
+    return markupSyntax;
+  }
+
+  /**
+   * Optional. Specifies the desired output syntax for the Chat message `formatted_text` field.
+   * @param markupSyntax markupSyntax or {@code null} for none
+   */
+  public SearchMessagesRequest setMarkupSyntax(java.lang.String markupSyntax) {
+    this.markupSyntax = markupSyntax;
+    return this;
+  }
+
   /**
    * Optional. How the results list is ordered. Supported attributes to order by are: -
    * `create_time`: Sorts the results by the time of the message creation. Default value. -
diff --git a/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchSpaceResult.java b/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchSpaceResult.java
new file mode 100644
index 00000000000..f1eaa6b6921
--- /dev/null
+++ b/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchSpaceResult.java
@@ -0,0 +1,66 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+/*
+ * This code was generated by https://github.com/googleapis/google-api-java-client-services/
+ * Modify at your own risk.
+ */
+
+package com.google.api.services.chat.v1.model;
+
+/**
+ * A single result item from a space search.
+ *
+ * <p> This is the Java data model class that specifies how to parse/serialize into the JSON that is
+ * transmitted over HTTP when working with the Google Chat API. For a detailed explanation see:
+ * <a href="https://developers.google.com/api-client-library/java/google-http-java-client/json">https://developers.google.com/api-client-library/java/google-http-java-client/json</a>
+ * </p>
+ *
+ * @author Google, Inc.
+ */
+@SuppressWarnings("javadoc")
+public final class SearchSpaceResult extends com.google.api.client.json.GenericJson {
+
+  /**
+   * Output only. The matched space.
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private Space space;
+
+  /**
+   * Output only. The matched space.
+   * @return value or {@code null} for none
+   */
+  public Space getSpace() {
+    return space;
+  }
+
+  /**
+   * Output only. The matched space.
+   * @param space space or {@code null} for none
+   */
+  public SearchSpaceResult setSpace(Space space) {
+    this.space = space;
+    return this;
+  }
+
+  @Override
+  public SearchSpaceResult set(String fieldName, Object value) {
+    return (SearchSpaceResult) super.set(fieldName, value);
+  }
+
+  @Override
+  public SearchSpaceResult clone() {
+    return (SearchSpaceResult) super.clone();
+  }
+
+}
diff --git a/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchSpacesResponse.java b/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchSpacesResponse.java
index 6397110ea07..c4aff5eb29a 100644
--- a/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchSpacesResponse.java
+++ b/clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/model/SearchSpacesResponse.java
@@ -37,6 +37,19 @@ public final class SearchSpacesResponse extends com.google.api.client.json.Gener
   @com.google.api.client.util.Key
   private java.lang.String nextPageToken;
 
+  /**
+   * Output only. The list of search results that matched the query.
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.util.List<SearchSpaceResult> results;
+
+  static {
+    // hack to force ProGuard to consider SearchSpaceResult used, since otherwise it would be stripped out
+    // see https://github.com/google/google-api-java-client/issues/543
+    com.google.api.client.util.Data.nullOf(SearchSpaceResult.class);
+  }
+
   /**
    * Deprecated: Please use the new `results` field instead. A page of the requested spaces. This
    * field will be populated only when `useAdminAccess` is set to `true` and deprecated in favor of
@@ -73,6 +86,23 @@ public SearchSpacesResponse setNextPageToken(java.lang.String nextPageToken) {
     return this;
   }
 
+  /**
+   * Output only. The list of search results that matched the query.
+   * @return value or {@code null} for none
+   */
+  public java.util.List<SearchSpaceResult> getResults() {
+    return results;
+  }
+
+  /**
+   * Output only. The list of search results that matched the query.
+   * @param results results or {@code null} for none
+   */
+  public SearchSpacesResponse setResults(java.util.List<SearchSpaceResult> results) {
+    this.results = results;
+    return this;
+  }
+
   /**
    * Deprecated: Please use the new `results` field instead. A page of the requested spaces. This
    * field will be populated only when `useAdminAccess` is set to `true` and deprecated in favor of
diff --git a/clients/google-api-services-chat/v1/2.0.0/pom.xml b/clients/google-api-services-chat/v1/2.0.0/pom.xml
index d1c4ddca359..c723b150c35 100644
--- a/clients/google-api-services-chat/v1/2.0.0/pom.xml
+++ b/clients/google-api-services-chat/v1/2.0.0/pom.xml
@@ -8,8 +8,8 @@
 
   <groupId>com.google.apis</groupId>
   <artifactId>google-api-services-chat</artifactId>
-  <version>v1-rev20260726-2.0.0</version>
-  <name>Google Chat API v1-rev20260726-2.0.0</name>
+  <version>v1-rev20260728-2.0.0</version>
+  <name>Google Chat API v1-rev20260728-2.0.0</name>
   <packaging>jar</packaging>
 
   <inceptionYear>2011</inceptionYear>
diff --git a/clients/google-api-services-chat/v1/README.md b/clients/google-api-services-chat/v1/README.md
index fa221d5e592..a5d8a97175e 100644
--- a/clients/google-api-services-chat/v1/README.md
+++ b/clients/google-api-services-chat/v1/README.md
@@ -22,7 +22,7 @@ Add the following lines to your `pom.xml` file:
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-chat</artifactId>
-      <version>v1-rev20260726-2.0.0</version>
+      <version>v1-rev20260728-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-chat:v1-rev20260726-2.0.0'
+  implementation 'com.google.apis:google-api-services-chat:v1-rev20260728-2.0.0'
 }
 ```