diff --git a/pubsublite/CHANGES.md b/pubsublite/CHANGES.md
index f4fb9b61b7a..595c8892b88 100644
--- a/pubsublite/CHANGES.md
+++ b/pubsublite/CHANGES.md
@@ -1,5 +1,23 @@
 # Changes
 
+## [1.0.0](https://www.github.com/googleapis/google-cloud-go/compare/v0.5.0...v1.0.0) (2021-01-28)
+
+
+### ⚠ BREAKING CHANGES
+
+* **pubsublite:** add separate publisher and subscriber client constructors with settings (api review) (#3528)
+* **pubsublite:** rename package ps to pscompat (api review) (#3569)
+* **pubsublite:** rename TopicPartitions to TopicPartitionCount (#3565)
+* **pubsublite:** use strings for resource paths (api review) (#3559)
+
+### Bug Fixes
+
+* **pubsublite:** add separate publisher and subscriber client constructors with settings (api review) ([#3528](https://www.github.com/googleapis/google-cloud-go/issues/3528)) ([98637e0](https://www.github.com/googleapis/google-cloud-go/commit/98637e089776292232bb7c039844680627ddade1))
+* **pubsublite:** close clients after publisher and subscriber have terminated ([#3512](https://www.github.com/googleapis/google-cloud-go/issues/3512)) ([72d2aff](https://www.github.com/googleapis/google-cloud-go/commit/72d2affb957cea7b6a223b108d0fe67c5635b25c))
+* **pubsublite:** rename package ps to pscompat (api review) ([#3569](https://www.github.com/googleapis/google-cloud-go/issues/3569)) ([9d8fd2b](https://www.github.com/googleapis/google-cloud-go/commit/9d8fd2b5e6999657bcf324878732da801b805591))
+* **pubsublite:** rename TopicPartitions to TopicPartitionCount ([#3565](https://www.github.com/googleapis/google-cloud-go/issues/3565)) ([86a4de7](https://www.github.com/googleapis/google-cloud-go/commit/86a4de757bc2eed97577aba7fd51b5f5540e097e))
+* **pubsublite:** use strings for resource paths (api review) ([#3559](https://www.github.com/googleapis/google-cloud-go/issues/3559)) ([c18ed25](https://www.github.com/googleapis/google-cloud-go/commit/c18ed25900ba41e0b6b98a89cec8615df6a1146c))
+
 ## [0.5.0](https://www.github.com/googleapis/google-cloud-go/compare/v0.4.0...v0.5.0) (2021-01-07)