diff --git a/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadClient.java b/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadClient.java
index 41471a43d4..e722802218 100644
--- a/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadClient.java
+++ b/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BaseBigQueryReadClient.java
@@ -167,7 +167,7 @@ public BigQueryReadStub getStub() {
    * limits are enforced based on the number of pre-filtered rows, so some filters can lead to
    * lopsided assignments.
    *
-   * <p>Read sessions automatically expire 24 hours after they are created and do not require manual
+   * <p>Read sessions automatically expire 6 hours after they are created and do not require manual
    * clean-up by the caller.
    *
    * <p>Sample code:
@@ -220,7 +220,7 @@ public final ReadSession createReadSession(
    * limits are enforced based on the number of pre-filtered rows, so some filters can lead to
    * lopsided assignments.
    *
-   * <p>Read sessions automatically expire 24 hours after they are created and do not require manual
+   * <p>Read sessions automatically expire 6 hours after they are created and do not require manual
    * clean-up by the caller.
    *
    * <p>Sample code:
@@ -273,7 +273,7 @@ public final ReadSession createReadSession(
    * limits are enforced based on the number of pre-filtered rows, so some filters can lead to
    * lopsided assignments.
    *
-   * <p>Read sessions automatically expire 24 hours after they are created and do not require manual
+   * <p>Read sessions automatically expire 6 hours after they are created and do not require manual
    * clean-up by the caller.
    *
    * <p>Sample code:
@@ -313,7 +313,7 @@ public final ReadSession createReadSession(CreateReadSessionRequest request) {
    * limits are enforced based on the number of pre-filtered rows, so some filters can lead to
    * lopsided assignments.
    *
-   * <p>Read sessions automatically expire 24 hours after they are created and do not require manual
+   * <p>Read sessions automatically expire 6 hours after they are created and do not require manual
    * clean-up by the caller.
    *
    * <p>Sample code:
diff --git a/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStubSettings.java b/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStubSettings.java
index 738beadb51..202bf003be 100644
--- a/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStubSettings.java
+++ b/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1beta2/stub/BigQueryWriteStubSettings.java
@@ -283,10 +283,10 @@ public static class Builder extends StubSettings.Builder<BigQueryWriteStubSettin
               .setInitialRetryDelay(Duration.ofMillis(100L))
               .setRetryDelayMultiplier(1.3)
               .setMaxRetryDelay(Duration.ofMillis(60000L))
-              .setInitialRpcTimeout(Duration.ofMillis(5000L))
+              .setInitialRpcTimeout(Duration.ofMillis(86400000L))
               .setRpcTimeoutMultiplier(1.0)
-              .setMaxRpcTimeout(Duration.ofMillis(5000L))
-              .setTotalTimeout(Duration.ofMillis(5000L))
+              .setMaxRpcTimeout(Duration.ofMillis(86400000L))
+              .setTotalTimeout(Duration.ofMillis(86400000L))
               .build();
       definitions.put("retry_policy_4_params", settings);
       settings =
diff --git a/grpc-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryReadGrpc.java b/grpc-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryReadGrpc.java
index b627f83b27..75c6842e2f 100644
--- a/grpc-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryReadGrpc.java
+++ b/grpc-google-cloud-bigquerystorage-v1beta2/src/main/java/com/google/cloud/bigquery/storage/v1beta2/BigQueryReadGrpc.java
@@ -248,7 +248,7 @@ public abstract static class BigQueryReadImplBase implements io.grpc.BindableSer
      * each stream will return the same number or rows. Additionally, the
      * limits are enforced based on the number of pre-filtered rows, so some
      * filters can lead to lopsided assignments.
-     * Read sessions automatically expire 24 hours after they are created and do
+     * Read sessions automatically expire 6 hours after they are created and do
      * not require manual clean-up by the caller.
      * </pre>
      */
@@ -372,7 +372,7 @@ protected BigQueryReadStub build(io.grpc.Channel channel, io.grpc.CallOptions ca
      * each stream will return the same number or rows. Additionally, the
      * limits are enforced based on the number of pre-filtered rows, so some
      * filters can lead to lopsided assignments.
-     * Read sessions automatically expire 24 hours after they are created and do
+     * Read sessions automatically expire 6 hours after they are created and do
      * not require manual clean-up by the caller.
      * </pre>
      */
@@ -475,7 +475,7 @@ protected BigQueryReadBlockingStub build(
      * each stream will return the same number or rows. Additionally, the
      * limits are enforced based on the number of pre-filtered rows, so some
      * filters can lead to lopsided assignments.
-     * Read sessions automatically expire 24 hours after they are created and do
+     * Read sessions automatically expire 6 hours after they are created and do
      * not require manual clean-up by the caller.
      * </pre>
      */
@@ -567,7 +567,7 @@ protected BigQueryReadFutureStub build(
      * each stream will return the same number or rows. Additionally, the
      * limits are enforced based on the number of pre-filtered rows, so some
      * filters can lead to lopsided assignments.
-     * Read sessions automatically expire 24 hours after they are created and do
+     * Read sessions automatically expire 6 hours after they are created and do
      * not require manual clean-up by the caller.
      * </pre>
      */
diff --git a/proto-google-cloud-bigquerystorage-v1beta2/src/main/proto/google/cloud/bigquery/storage/v1beta2/storage.proto b/proto-google-cloud-bigquerystorage-v1beta2/src/main/proto/google/cloud/bigquery/storage/v1beta2/storage.proto
index 8c25b84612..32d9310132 100644
--- a/proto-google-cloud-bigquerystorage-v1beta2/src/main/proto/google/cloud/bigquery/storage/v1beta2/storage.proto
+++ b/proto-google-cloud-bigquerystorage-v1beta2/src/main/proto/google/cloud/bigquery/storage/v1beta2/storage.proto
@@ -64,7 +64,7 @@ service BigQueryRead {
   // limits are enforced based on the number of pre-filtered rows, so some
   // filters can lead to lopsided assignments.
   //
-  // Read sessions automatically expire 24 hours after they are created and do
+  // Read sessions automatically expire 6 hours after they are created and do
   // not require manual clean-up by the caller.
   rpc CreateReadSession(CreateReadSessionRequest) returns (ReadSession) {
     option (google.api.http) = {