diff --git a/clients/google-api-services-dialogflow/v2/2.0.0/README.md b/clients/google-api-services-dialogflow/v2/2.0.0/README.md
index f8588545366..544bdacce7a 100644
--- a/clients/google-api-services-dialogflow/v2/2.0.0/README.md
+++ b/clients/google-api-services-dialogflow/v2/2.0.0/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-dialogflow</artifactId>
-      <version>v2-rev20260701-2.0.0</version>
+      <version>v2-rev20260716-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-dialogflow:v2-rev20260701-2.0.0'
+  implementation 'com.google.apis:google-api-services-dialogflow:v2-rev20260716-2.0.0'
 }
 ```
 
diff --git a/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2ProbeDetails.java b/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2ProbeDetails.java
new file mode 100644
index 00000000000..e12412acdb9
--- /dev/null
+++ b/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2ProbeDetails.java
@@ -0,0 +1,105 @@
+/*
+ * 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.dialogflow.v2.model;
+
+/**
+ * Model definition for GoogleCloudDialogflowV2ProbeDetails.
+ *
+ * <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 Dialogflow 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 GoogleCloudDialogflowV2ProbeDetails extends com.google.api.client.json.GenericJson {
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private String initTime;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private String optionsLatency;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String probeStatus;
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public String getInitTime() {
+    return initTime;
+  }
+
+  /**
+   * @param initTime initTime or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2ProbeDetails setInitTime(String initTime) {
+    this.initTime = initTime;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public String getOptionsLatency() {
+    return optionsLatency;
+  }
+
+  /**
+   * @param optionsLatency optionsLatency or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2ProbeDetails setOptionsLatency(String optionsLatency) {
+    this.optionsLatency = optionsLatency;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getProbeStatus() {
+    return probeStatus;
+  }
+
+  /**
+   * @param probeStatus probeStatus or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2ProbeDetails setProbeStatus(java.lang.String probeStatus) {
+    this.probeStatus = probeStatus;
+    return this;
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2ProbeDetails set(String fieldName, Object value) {
+    return (GoogleCloudDialogflowV2ProbeDetails) super.set(fieldName, value);
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2ProbeDetails clone() {
+    return (GoogleCloudDialogflowV2ProbeDetails) super.clone();
+  }
+
+}
diff --git a/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2SipHostname.java b/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2SipHostname.java
new file mode 100644
index 00000000000..e9f6b4aa7f6
--- /dev/null
+++ b/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2SipHostname.java
@@ -0,0 +1,189 @@
+/*
+ * 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.dialogflow.v2.model;
+
+/**
+ * Model definition for GoogleCloudDialogflowV2SipHostname.
+ *
+ * <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 Dialogflow 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 GoogleCloudDialogflowV2SipHostname extends com.google.api.client.json.GenericJson {
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String connectionState;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.Boolean enabledSipPing;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails errorDetails;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String peerHostname;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String peerSocketAddress;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private String pingInterval;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private GoogleCloudDialogflowV2ProbeDetails probeDetails;
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getConnectionState() {
+    return connectionState;
+  }
+
+  /**
+   * @param connectionState connectionState or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipHostname setConnectionState(java.lang.String connectionState) {
+    this.connectionState = connectionState;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.Boolean getEnabledSipPing() {
+    return enabledSipPing;
+  }
+
+  /**
+   * @param enabledSipPing enabledSipPing or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipHostname setEnabledSipPing(java.lang.Boolean enabledSipPing) {
+    this.enabledSipPing = enabledSipPing;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails getErrorDetails() {
+    return errorDetails;
+  }
+
+  /**
+   * @param errorDetails errorDetails or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipHostname setErrorDetails(GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails errorDetails) {
+    this.errorDetails = errorDetails;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getPeerHostname() {
+    return peerHostname;
+  }
+
+  /**
+   * @param peerHostname peerHostname or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipHostname setPeerHostname(java.lang.String peerHostname) {
+    this.peerHostname = peerHostname;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getPeerSocketAddress() {
+    return peerSocketAddress;
+  }
+
+  /**
+   * @param peerSocketAddress peerSocketAddress or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipHostname setPeerSocketAddress(java.lang.String peerSocketAddress) {
+    this.peerSocketAddress = peerSocketAddress;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public String getPingInterval() {
+    return pingInterval;
+  }
+
+  /**
+   * @param pingInterval pingInterval or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipHostname setPingInterval(String pingInterval) {
+    this.pingInterval = pingInterval;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2ProbeDetails getProbeDetails() {
+    return probeDetails;
+  }
+
+  /**
+   * @param probeDetails probeDetails or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipHostname setProbeDetails(GoogleCloudDialogflowV2ProbeDetails probeDetails) {
+    this.probeDetails = probeDetails;
+    return this;
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2SipHostname set(String fieldName, Object value) {
+    return (GoogleCloudDialogflowV2SipHostname) super.set(fieldName, value);
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2SipHostname clone() {
+    return (GoogleCloudDialogflowV2SipHostname) super.clone();
+  }
+
+}
diff --git a/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails.java b/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails.java
new file mode 100644
index 00000000000..8c4fe9256be
--- /dev/null
+++ b/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails.java
@@ -0,0 +1,84 @@
+/*
+ * 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.dialogflow.v2.model;
+
+/**
+ * Model definition for GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails.
+ *
+ * <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 Dialogflow 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 GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails extends com.google.api.client.json.GenericJson {
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String certificateState;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String errorMessage;
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getCertificateState() {
+    return certificateState;
+  }
+
+  /**
+   * @param certificateState certificateState or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails setCertificateState(java.lang.String certificateState) {
+    this.certificateState = certificateState;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getErrorMessage() {
+    return errorMessage;
+  }
+
+  /**
+   * @param errorMessage errorMessage or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails setErrorMessage(java.lang.String errorMessage) {
+    this.errorMessage = errorMessage;
+    return this;
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails set(String fieldName, Object value) {
+    return (GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails) super.set(fieldName, value);
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails clone() {
+    return (GoogleCloudDialogflowV2SipHostnameHostnameErrorDetails) super.clone();
+  }
+
+}
diff --git a/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2SipTrunk.java b/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2SipTrunk.java
index 36f778b5811..ca834bbe744 100644
--- a/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2SipTrunk.java
+++ b/clients/google-api-services-dialogflow/v2/2.0.0/com/google/api/services/dialogflow/v2/model/GoogleCloudDialogflowV2SipTrunk.java
@@ -53,12 +53,30 @@ public final class GoogleCloudDialogflowV2SipTrunk extends com.google.api.client
   @com.google.api.client.util.Key
   private java.util.List<java.lang.String> expectedHostname;
 
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String googleRootCertFile;
+
   /**
    * The value may be {@code null}.
    */
   @com.google.api.client.util.Key
   private java.lang.String name;
 
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.util.List<GoogleCloudDialogflowV2SipHostname> peerHostnames;
+
+  static {
+    // hack to force ProGuard to consider GoogleCloudDialogflowV2SipHostname 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(GoogleCloudDialogflowV2SipHostname.class);
+  }
+
   /**
    * @return value or {@code null} for none
    */
@@ -104,6 +122,21 @@ public GoogleCloudDialogflowV2SipTrunk setExpectedHostname(java.util.List<java.l
     return this;
   }
 
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getGoogleRootCertFile() {
+    return googleRootCertFile;
+  }
+
+  /**
+   * @param googleRootCertFile googleRootCertFile or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipTrunk setGoogleRootCertFile(java.lang.String googleRootCertFile) {
+    this.googleRootCertFile = googleRootCertFile;
+    return this;
+  }
+
   /**
    * @return value or {@code null} for none
    */
@@ -119,6 +152,21 @@ public GoogleCloudDialogflowV2SipTrunk setName(java.lang.String name) {
     return this;
   }
 
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.util.List<GoogleCloudDialogflowV2SipHostname> getPeerHostnames() {
+    return peerHostnames;
+  }
+
+  /**
+   * @param peerHostnames peerHostnames or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2SipTrunk setPeerHostnames(java.util.List<GoogleCloudDialogflowV2SipHostname> peerHostnames) {
+    this.peerHostnames = peerHostnames;
+    return this;
+  }
+
   @Override
   public GoogleCloudDialogflowV2SipTrunk set(String fieldName, Object value) {
     return (GoogleCloudDialogflowV2SipTrunk) super.set(fieldName, value);
diff --git a/clients/google-api-services-dialogflow/v2/2.0.0/pom.xml b/clients/google-api-services-dialogflow/v2/2.0.0/pom.xml
index 8b65ad76049..7b6882f6174 100644
--- a/clients/google-api-services-dialogflow/v2/2.0.0/pom.xml
+++ b/clients/google-api-services-dialogflow/v2/2.0.0/pom.xml
@@ -8,8 +8,8 @@
 
   <groupId>com.google.apis</groupId>
   <artifactId>google-api-services-dialogflow</artifactId>
-  <version>v2-rev20260701-2.0.0</version>
-  <name>Dialogflow API v2-rev20260701-2.0.0</name>
+  <version>v2-rev20260716-2.0.0</version>
+  <name>Dialogflow API v2-rev20260716-2.0.0</name>
   <packaging>jar</packaging>
 
   <inceptionYear>2011</inceptionYear>
diff --git a/clients/google-api-services-dialogflow/v2/README.md b/clients/google-api-services-dialogflow/v2/README.md
index f8588545366..544bdacce7a 100644
--- a/clients/google-api-services-dialogflow/v2/README.md
+++ b/clients/google-api-services-dialogflow/v2/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-dialogflow</artifactId>
-      <version>v2-rev20260701-2.0.0</version>
+      <version>v2-rev20260716-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-dialogflow:v2-rev20260701-2.0.0'
+  implementation 'com.google.apis:google-api-services-dialogflow:v2-rev20260716-2.0.0'
 }
 ```
 
diff --git a/clients/google-api-services-dialogflow/v2beta1/2.0.0/README.md b/clients/google-api-services-dialogflow/v2beta1/2.0.0/README.md
index 0f60e4db3d6..c82bfaeb775 100644
--- a/clients/google-api-services-dialogflow/v2beta1/2.0.0/README.md
+++ b/clients/google-api-services-dialogflow/v2beta1/2.0.0/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-dialogflow</artifactId>
-      <version>v2beta1-rev20260701-2.0.0</version>
+      <version>v2beta1-rev20260716-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-dialogflow:v2beta1-rev20260701-2.0.0'
+  implementation 'com.google.apis:google-api-services-dialogflow:v2beta1-rev20260716-2.0.0'
 }
 ```
 
diff --git a/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1ProbeDetails.java b/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1ProbeDetails.java
new file mode 100644
index 00000000000..a850fcd5d9e
--- /dev/null
+++ b/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1ProbeDetails.java
@@ -0,0 +1,105 @@
+/*
+ * 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.dialogflow.v2beta1.model;
+
+/**
+ * Model definition for GoogleCloudDialogflowV2beta1ProbeDetails.
+ *
+ * <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 Dialogflow 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 GoogleCloudDialogflowV2beta1ProbeDetails extends com.google.api.client.json.GenericJson {
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private String initTime;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private String optionsLatency;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String probeStatus;
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public String getInitTime() {
+    return initTime;
+  }
+
+  /**
+   * @param initTime initTime or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1ProbeDetails setInitTime(String initTime) {
+    this.initTime = initTime;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public String getOptionsLatency() {
+    return optionsLatency;
+  }
+
+  /**
+   * @param optionsLatency optionsLatency or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1ProbeDetails setOptionsLatency(String optionsLatency) {
+    this.optionsLatency = optionsLatency;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getProbeStatus() {
+    return probeStatus;
+  }
+
+  /**
+   * @param probeStatus probeStatus or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1ProbeDetails setProbeStatus(java.lang.String probeStatus) {
+    this.probeStatus = probeStatus;
+    return this;
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2beta1ProbeDetails set(String fieldName, Object value) {
+    return (GoogleCloudDialogflowV2beta1ProbeDetails) super.set(fieldName, value);
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2beta1ProbeDetails clone() {
+    return (GoogleCloudDialogflowV2beta1ProbeDetails) super.clone();
+  }
+
+}
diff --git a/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1SipHostname.java b/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1SipHostname.java
new file mode 100644
index 00000000000..5d9a8c8a18f
--- /dev/null
+++ b/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1SipHostname.java
@@ -0,0 +1,189 @@
+/*
+ * 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.dialogflow.v2beta1.model;
+
+/**
+ * Model definition for GoogleCloudDialogflowV2beta1SipHostname.
+ *
+ * <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 Dialogflow 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 GoogleCloudDialogflowV2beta1SipHostname extends com.google.api.client.json.GenericJson {
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String connectionState;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.Boolean enabledSipPing;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails errorDetails;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String peerHostname;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String peerSocketAddress;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private String pingInterval;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private GoogleCloudDialogflowV2beta1ProbeDetails probeDetails;
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getConnectionState() {
+    return connectionState;
+  }
+
+  /**
+   * @param connectionState connectionState or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipHostname setConnectionState(java.lang.String connectionState) {
+    this.connectionState = connectionState;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.Boolean getEnabledSipPing() {
+    return enabledSipPing;
+  }
+
+  /**
+   * @param enabledSipPing enabledSipPing or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipHostname setEnabledSipPing(java.lang.Boolean enabledSipPing) {
+    this.enabledSipPing = enabledSipPing;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails getErrorDetails() {
+    return errorDetails;
+  }
+
+  /**
+   * @param errorDetails errorDetails or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipHostname setErrorDetails(GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails errorDetails) {
+    this.errorDetails = errorDetails;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getPeerHostname() {
+    return peerHostname;
+  }
+
+  /**
+   * @param peerHostname peerHostname or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipHostname setPeerHostname(java.lang.String peerHostname) {
+    this.peerHostname = peerHostname;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getPeerSocketAddress() {
+    return peerSocketAddress;
+  }
+
+  /**
+   * @param peerSocketAddress peerSocketAddress or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipHostname setPeerSocketAddress(java.lang.String peerSocketAddress) {
+    this.peerSocketAddress = peerSocketAddress;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public String getPingInterval() {
+    return pingInterval;
+  }
+
+  /**
+   * @param pingInterval pingInterval or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipHostname setPingInterval(String pingInterval) {
+    this.pingInterval = pingInterval;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1ProbeDetails getProbeDetails() {
+    return probeDetails;
+  }
+
+  /**
+   * @param probeDetails probeDetails or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipHostname setProbeDetails(GoogleCloudDialogflowV2beta1ProbeDetails probeDetails) {
+    this.probeDetails = probeDetails;
+    return this;
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2beta1SipHostname set(String fieldName, Object value) {
+    return (GoogleCloudDialogflowV2beta1SipHostname) super.set(fieldName, value);
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2beta1SipHostname clone() {
+    return (GoogleCloudDialogflowV2beta1SipHostname) super.clone();
+  }
+
+}
diff --git a/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails.java b/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails.java
new file mode 100644
index 00000000000..66529ed8e94
--- /dev/null
+++ b/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails.java
@@ -0,0 +1,84 @@
+/*
+ * 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.dialogflow.v2beta1.model;
+
+/**
+ * Model definition for GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails.
+ *
+ * <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 Dialogflow 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 GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails extends com.google.api.client.json.GenericJson {
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String certificateState;
+
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String errorMessage;
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getCertificateState() {
+    return certificateState;
+  }
+
+  /**
+   * @param certificateState certificateState or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails setCertificateState(java.lang.String certificateState) {
+    this.certificateState = certificateState;
+    return this;
+  }
+
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getErrorMessage() {
+    return errorMessage;
+  }
+
+  /**
+   * @param errorMessage errorMessage or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails setErrorMessage(java.lang.String errorMessage) {
+    this.errorMessage = errorMessage;
+    return this;
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails set(String fieldName, Object value) {
+    return (GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails) super.set(fieldName, value);
+  }
+
+  @Override
+  public GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails clone() {
+    return (GoogleCloudDialogflowV2beta1SipHostnameHostnameErrorDetails) super.clone();
+  }
+
+}
diff --git a/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1SipTrunk.java b/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1SipTrunk.java
index 47f6e24df04..c1a00c44998 100644
--- a/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1SipTrunk.java
+++ b/clients/google-api-services-dialogflow/v2beta1/2.0.0/com/google/api/services/dialogflow/v2beta1/model/GoogleCloudDialogflowV2beta1SipTrunk.java
@@ -53,12 +53,30 @@ public final class GoogleCloudDialogflowV2beta1SipTrunk extends com.google.api.c
   @com.google.api.client.util.Key
   private java.util.List<java.lang.String> expectedHostname;
 
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String googleRootCertFile;
+
   /**
    * The value may be {@code null}.
    */
   @com.google.api.client.util.Key
   private java.lang.String name;
 
+  /**
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.util.List<GoogleCloudDialogflowV2beta1SipHostname> peerHostnames;
+
+  static {
+    // hack to force ProGuard to consider GoogleCloudDialogflowV2beta1SipHostname 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(GoogleCloudDialogflowV2beta1SipHostname.class);
+  }
+
   /**
    * @return value or {@code null} for none
    */
@@ -104,6 +122,21 @@ public GoogleCloudDialogflowV2beta1SipTrunk setExpectedHostname(java.util.List<j
     return this;
   }
 
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getGoogleRootCertFile() {
+    return googleRootCertFile;
+  }
+
+  /**
+   * @param googleRootCertFile googleRootCertFile or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipTrunk setGoogleRootCertFile(java.lang.String googleRootCertFile) {
+    this.googleRootCertFile = googleRootCertFile;
+    return this;
+  }
+
   /**
    * @return value or {@code null} for none
    */
@@ -119,6 +152,21 @@ public GoogleCloudDialogflowV2beta1SipTrunk setName(java.lang.String name) {
     return this;
   }
 
+  /**
+   * @return value or {@code null} for none
+   */
+  public java.util.List<GoogleCloudDialogflowV2beta1SipHostname> getPeerHostnames() {
+    return peerHostnames;
+  }
+
+  /**
+   * @param peerHostnames peerHostnames or {@code null} for none
+   */
+  public GoogleCloudDialogflowV2beta1SipTrunk setPeerHostnames(java.util.List<GoogleCloudDialogflowV2beta1SipHostname> peerHostnames) {
+    this.peerHostnames = peerHostnames;
+    return this;
+  }
+
   @Override
   public GoogleCloudDialogflowV2beta1SipTrunk set(String fieldName, Object value) {
     return (GoogleCloudDialogflowV2beta1SipTrunk) super.set(fieldName, value);
diff --git a/clients/google-api-services-dialogflow/v2beta1/2.0.0/pom.xml b/clients/google-api-services-dialogflow/v2beta1/2.0.0/pom.xml
index 56e8af59b9e..f3757fdb1ab 100644
--- a/clients/google-api-services-dialogflow/v2beta1/2.0.0/pom.xml
+++ b/clients/google-api-services-dialogflow/v2beta1/2.0.0/pom.xml
@@ -8,8 +8,8 @@
 
   <groupId>com.google.apis</groupId>
   <artifactId>google-api-services-dialogflow</artifactId>
-  <version>v2beta1-rev20260701-2.0.0</version>
-  <name>Dialogflow API v2beta1-rev20260701-2.0.0</name>
+  <version>v2beta1-rev20260716-2.0.0</version>
+  <name>Dialogflow API v2beta1-rev20260716-2.0.0</name>
   <packaging>jar</packaging>
 
   <inceptionYear>2011</inceptionYear>
diff --git a/clients/google-api-services-dialogflow/v2beta1/README.md b/clients/google-api-services-dialogflow/v2beta1/README.md
index 0f60e4db3d6..c82bfaeb775 100644
--- a/clients/google-api-services-dialogflow/v2beta1/README.md
+++ b/clients/google-api-services-dialogflow/v2beta1/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-dialogflow</artifactId>
-      <version>v2beta1-rev20260701-2.0.0</version>
+      <version>v2beta1-rev20260716-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-dialogflow:v2beta1-rev20260701-2.0.0'
+  implementation 'com.google.apis:google-api-services-dialogflow:v2beta1-rev20260716-2.0.0'
 }
 ```