diff --git a/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java b/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
index 16cdef839..73510eee0 100644
--- a/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
+++ b/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
@@ -654,7 +654,7 @@ public static class Builder extends StubSettings.Builder<PublisherStubSettings,
       settings =
           RetrySettings.newBuilder()
               .setInitialRetryDelay(Duration.ofMillis(100L))
-              .setRetryDelayMultiplier(1.3)
+              .setRetryDelayMultiplier(4.0)
               .setMaxRetryDelay(Duration.ofMillis(60000L))
               .setInitialRpcTimeout(Duration.ofMillis(60000L))
               .setRpcTimeoutMultiplier(1.0)
diff --git a/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java b/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
index eaeb42a9b..459c80624 100644
--- a/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
+++ b/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
@@ -603,7 +603,7 @@ public static class Builder extends StubSettings.Builder<SubscriberStubSettings,
       settings =
           RetrySettings.newBuilder()
               .setInitialRetryDelay(Duration.ofMillis(100L))
-              .setRetryDelayMultiplier(1.3)
+              .setRetryDelayMultiplier(4.0)
               .setMaxRetryDelay(Duration.ofMillis(60000L))
               .setInitialRpcTimeout(Duration.ofMillis(900000L))
               .setRpcTimeoutMultiplier(1.0)