diff --git a/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/Flow.scala b/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/Flow.scala
index 9493b880..a7aba152 100644
--- a/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/Flow.scala
+++ b/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/Flow.scala
@@ -100,8 +100,11 @@ object Flow {
             .as(Inserted.asInstanceOf[InsertStatus])
             .value
         } else {
-          Logger[F].debug(s"Event ${event.value.eventId}/${event.value.etlTstamp} is not ready yet. Nack") >>
-            event.nack.as(Retry.asInstanceOf[InsertStatus].asRight)
+          Logger[F]
+            .debug(
+              s"Event ${event.value.eventId}/${event.value.etlTstamp} is not ready yet. Ignoring it so PubSub re-sends it later."
+            )
+            .as(Retry.asInstanceOf[InsertStatus].asRight)
         }
       }
     } yield result
diff --git a/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/Repeater.scala b/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/Repeater.scala
index 83a6a4b2..59297b35 100644
--- a/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/Repeater.scala
+++ b/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/Repeater.scala
@@ -17,6 +17,7 @@ import com.snowplowanalytics.snowplow.badrows.Processor
 import cats.effect._
 import org.typelevel.log4cats.Logger
 import org.typelevel.log4cats.slf4j.Slf4jLogger
+import scala.concurrent.duration.DurationInt
 
 object Repeater extends IOApp {
 
@@ -34,7 +35,8 @@ object Repeater extends IOApp {
               resources.env.projectId,
               resources.env.config.input.subscription,
               resources.uninsertable,
-              resources.env.gcpUserAgent
+              resources.env.gcpUserAgent,
+              command.backoffPeriod.seconds
             )
             .interruptWhen(resources.stop)
             .through[IO, Unit](Flow.sink(resources))
diff --git a/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/services/PubSub.scala b/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/services/PubSub.scala
index f5a5f124..72e73717 100644
--- a/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/services/PubSub.scala
+++ b/modules/repeater/src/main/scala/com.snowplowanalytics.snowplow.storage.bigquery.repeater/services/PubSub.scala
@@ -24,6 +24,8 @@ import com.snowplowanalytics.snowplow.storage.bigquery.common.config.AllAppsConf
 import com.snowplowanalytics.snowplow.storage.bigquery.common.createGcpUserAgentHeader
 import fs2.Stream
 import org.typelevel.log4cats.Logger
+import org.threeten.bp.{Duration => ThreetenDuration}
+import scala.concurrent.duration.{DurationInt, FiniteDuration}
 
 /** Module responsible for reading Pub/Sub */
 object PubSub {
@@ -33,18 +35,26 @@ object PubSub {
     projectId: String,
     subscription: String,
     uninsertable: Queue[F, BadRow],
-    gcpUserAgent: GcpUserAgent
+    gcpUserAgent: GcpUserAgent,
+    backoffPeriod: FiniteDuration
   ): Stream[F, ConsumerRecord[F, EventContainer]] =
     PubsubGoogleConsumer.subscribe[F, EventContainer](
       Model.ProjectId(projectId),
       Model.Subscription(subscription),
       (msg, err, ack, _) => callback[F](msg, err, ack, uninsertable),
       PubsubGoogleConsumerConfig[F](
-        onFailedTerminate   = t => Logger[F].error(s"Terminating consumer due to $t"),
-        customizeSubscriber = Some(_.setHeaderProvider(createGcpUserAgentHeader(gcpUserAgent)))
+        onFailedTerminate = t => Logger[F].error(s"Terminating consumer due to $t"),
+        customizeSubscriber = Some {
+          _.setHeaderProvider(createGcpUserAgentHeader(gcpUserAgent))
+            .setMaxAckExtensionPeriod(convertDuration(backoffPeriod.min(1.hour)))
+            .setMinDurationPerAckExtension(convertDuration(backoffPeriod.min(600.seconds).minus(1.second)))
+        }
       )
     )
 
+  private def convertDuration(d: FiniteDuration): ThreetenDuration =
+    ThreetenDuration.ofMillis(d.toMillis)
+
   private def callback[F[_]: Sync](msg: PubsubMessage, err: Throwable, ack: F[Unit], uninsertable: Queue[F, BadRow]) = {
     val info    = FailureDetails.LoaderRecoveryError.ParsingError(err.toString, Nil)
     val failure = Failure.LoaderRecoveryFailure(info)