diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6215a1465..fb2cbc21b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.43.0](https://github.com/googleapis/java-bigquery/compare/v2.42.4...v2.43.0) (2024-10-01)
+
+
+### Features
+
+* Add max staleness to ExternalTableDefinition ([#3499](https://github.com/googleapis/java-bigquery/issues/3499)) ([f1ebd5b](https://github.com/googleapis/java-bigquery/commit/f1ebd5be5877a68f76efafc30e3b5b0763f343c5))
+
 ## [2.42.4](https://github.com/googleapis/java-bigquery/compare/v2.42.3...v2.42.4) (2024-09-30)
 
 
diff --git a/benchmark/pom.xml b/benchmark/pom.xml
index 4d0539e0d..ee61a3203 100644
--- a/benchmark/pom.xml
+++ b/benchmark/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <artifactId>google-cloud-bigquery-parent</artifactId>
     <groupId>com.google.cloud</groupId>
-    <version>2.42.4</version><!-- {x-version-update:google-cloud-bigquery:current} -->
+    <version>2.43.0</version><!-- {x-version-update:google-cloud-bigquery:current} -->
   </parent>
 
   <properties>
diff --git a/google-cloud-bigquery-bom/pom.xml b/google-cloud-bigquery-bom/pom.xml
index a4bba7434..51f0dd1c6 100644
--- a/google-cloud-bigquery-bom/pom.xml
+++ b/google-cloud-bigquery-bom/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-bigquery-bom</artifactId>
-    <version>2.42.4</version><!-- {x-version-update:google-cloud-bigquery:current} -->
+    <version>2.43.0</version><!-- {x-version-update:google-cloud-bigquery:current} -->
     <packaging>pom</packaging>
     <parent>
         <groupId>com.google.cloud</groupId>
@@ -54,7 +54,7 @@
         <dependency>
           <groupId>com.google.cloud</groupId>
           <artifactId>google-cloud-bigquery</artifactId>
-          <version>2.42.4</version><!-- {x-version-update:google-cloud-bigquery:current} -->
+          <version>2.43.0</version><!-- {x-version-update:google-cloud-bigquery:current} -->
         </dependency>
       </dependencies>
     </dependencyManagement>
diff --git a/google-cloud-bigquery/pom.xml b/google-cloud-bigquery/pom.xml
index 7d3a4ddc0..6425692d9 100644
--- a/google-cloud-bigquery/pom.xml
+++ b/google-cloud-bigquery/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-bigquery</artifactId>
-  <version>2.42.4</version><!-- {x-version-update:google-cloud-bigquery:current} -->
+  <version>2.43.0</version><!-- {x-version-update:google-cloud-bigquery:current} -->
   <packaging>jar</packaging>
   <name>BigQuery</name>
   <url>https://github.com/googleapis/java-bigquery</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-bigquery-parent</artifactId>
-    <version>2.42.4</version><!-- {x-version-update:google-cloud-bigquery:current} -->
+    <version>2.43.0</version><!-- {x-version-update:google-cloud-bigquery:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-bigquery</site.installationModule>
diff --git a/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/ExternalTableDefinition.java b/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/ExternalTableDefinition.java
index 363f9507e..5af3085e2 100644
--- a/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/ExternalTableDefinition.java
+++ b/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/ExternalTableDefinition.java
@@ -200,6 +200,20 @@ public Builder setMetadataCacheMode(String metadataCacheMode) {
 
     abstract Builder setMetadataCacheModeInner(String metadataCacheMode);
 
+    /**
+     * [Optional] Metadata Cache Mode for the table. Set this to enable caching of metadata from
+     * external data source.
+     *
+     * @see <a
+     *     href="https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#resource:-table">
+     *     MaxStaleness</a>
+     */
+    public Builder setMaxStaleness(String maxStaleness) {
+      return setMaxStalenessInner(maxStaleness);
+    }
+
+    abstract Builder setMaxStalenessInner(String maxStaleness);
+
     /** Creates an {@code ExternalTableDefinition} object. */
     @Override
     public abstract ExternalTableDefinition build();
@@ -305,6 +319,22 @@ public String getMetadataCacheMode() {
   @Nullable
   abstract String getMetadataCacheModeInner();
 
+  /**
+   * Returns the maximum staleness of data that could be returned when the table is queried.
+   * Staleness encoded as a string encoding of sql IntervalValue type.
+   *
+   * @see <a
+   *     href="/service/hhttps://cloud.google.com/bigquery/docs/reference/rest/v2/tables#resource:-table">
+   *     MaxStaleness</a>
+   */
+  @Nullable
+  public String getMaxStaleness() {
+    return getMaxStalenessInner();
+  }
+
+  @Nullable
+  abstract String getMaxStalenessInner();
+
   /**
    * Returns the source format, and possibly some parsing options, of the external data. Supported
    * formats are {@code CSV} and {@code NEWLINE_DELIMITED_JSON}.
@@ -351,6 +381,9 @@ public HivePartitioningOptions getHivePartitioningOptions() {
   com.google.api.services.bigquery.model.Table toPb() {
     Table tablePb = super.toPb();
     tablePb.setExternalDataConfiguration(toExternalDataConfigurationPb());
+    if (getMaxStaleness() != null) {
+      tablePb.setMaxStaleness(getMaxStaleness());
+    }
     return tablePb;
   }
 
@@ -616,6 +649,9 @@ static ExternalTableDefinition fromPb(Table tablePb) {
       if (externalDataConfiguration.getMetadataCacheMode() != null) {
         builder.setMetadataCacheMode(externalDataConfiguration.getMetadataCacheMode());
       }
+      if (tablePb.getMaxStaleness() != null) {
+        builder.setMaxStaleness(tablePb.getMaxStaleness());
+      }
     }
     return builder.build();
   }
diff --git a/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/ExternalTableDefinitionTest.java b/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/ExternalTableDefinitionTest.java
index 2562e1763..e6e7e0fcc 100644
--- a/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/ExternalTableDefinitionTest.java
+++ b/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/ExternalTableDefinitionTest.java
@@ -59,8 +59,8 @@ public class ExternalTableDefinitionTest {
           .setSourceUriPrefix(SOURCE_URIS.get(0))
           .build();
   private static final String OBJECT_METADATA = "SIMPLE";
-
   private static final String METADATA_CACHE_MODE = "AUTOMATIC";
+  private static final String MAX_STALENESS = "INTERVAL 15 MINUTE";
   private static final ExternalTableDefinition EXTERNAL_TABLE_DEFINITION =
       ExternalTableDefinition.newBuilder(SOURCE_URIS, TABLE_SCHEMA, CSV_OPTIONS)
           .setFileSetSpecType("FILE_SET_SPEC_TYPE_FILE_SYSTEM_MATCH")
@@ -73,6 +73,7 @@ public class ExternalTableDefinitionTest {
           .setHivePartitioningOptions(HIVE_PARTITIONING_OPTIONS)
           .setObjectMetadata(OBJECT_METADATA)
           .setMetadataCacheMode(METADATA_CACHE_MODE)
+          .setMaxStaleness(MAX_STALENESS)
           .build();
 
   private static final ExternalTableDefinition EXTERNAL_TABLE_DEFINITION_AVRO =
@@ -174,5 +175,6 @@ private void compareExternalTableDefinition(
     assertEquals(expected.getHivePartitioningOptions(), value.getHivePartitioningOptions());
     assertEquals(expected.getObjectMetadata(), value.getObjectMetadata());
     assertEquals(expected.getMetadataCacheMode(), value.getMetadataCacheMode());
+    assertEquals(expected.getMaxStaleness(), value.getMaxStaleness());
   }
 }
diff --git a/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/it/ITBigQueryTest.java b/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/it/ITBigQueryTest.java
index 15fe5eb8c..b1cb8d845 100644
--- a/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/it/ITBigQueryTest.java
+++ b/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/it/ITBigQueryTest.java
@@ -2111,9 +2111,13 @@ public void testCreateAndGetTableWithSelectedField() {
   public void testCreateExternalTable() throws InterruptedException {
     String tableName = "test_create_external_table";
     TableId tableId = TableId.of(DATASET, tableName);
+
     ExternalTableDefinition externalTableDefinition =
         ExternalTableDefinition.of(
-            "gs://" + BUCKET + "/" + JSON_LOAD_FILE, TABLE_SCHEMA, FormatOptions.json());
+                "gs://" + BUCKET + "/" + JSON_LOAD_FILE, TABLE_SCHEMA, FormatOptions.json())
+            .toBuilder()
+            .setMaxStaleness("INTERVAL 15 MINUTE")
+            .build();
     TableInfo tableInfo = TableInfo.of(tableId, externalTableDefinition);
     Table createdTable = bigquery.create(tableInfo);
     assertNotNull(createdTable);
diff --git a/pom.xml b/pom.xml
index 53e4b5b9a..1caff5398 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-bigquery-parent</artifactId>
   <packaging>pom</packaging>
-  <version>2.42.4</version><!-- {x-version-update:google-cloud-bigquery:current} -->
+  <version>2.43.0</version><!-- {x-version-update:google-cloud-bigquery:current} -->
   <name>BigQuery Parent</name>
   <url>https://github.com/googleapis/java-bigquery</url>
   <description>
@@ -93,7 +93,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-bigquery</artifactId>
-        <version>2.42.4</version><!-- {x-version-update:google-cloud-bigquery:current} -->
+        <version>2.43.0</version><!-- {x-version-update:google-cloud-bigquery:current} -->
       </dependency>
 
       <dependency>
diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index 8d3d0e4d5..2b950de1a 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -45,7 +45,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigquery</artifactId>
-      <version>2.42.3</version>
+      <version>2.42.4</version>
     </dependency>
     <!-- [END bigquery_install_without_bom] -->
 
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index be36735e9..14e69ed83 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -44,7 +44,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigquery</artifactId>
-      <version>2.42.4</version>
+      <version>2.43.0</version>
     </dependency>
     <!-- {x-version-update-end} -->
     <dependency>
diff --git a/versions.txt b/versions.txt
index 5ab44bc13..4f2cdbe2a 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-bigquery:2.42.4:2.42.4
\ No newline at end of file
+google-cloud-bigquery:2.43.0:2.43.0
\ No newline at end of file