diff --git a/docs/changelogs/preview.md b/docs/changelogs/preview.md
index 343ca36847..dfdb1f5b0e 100644
--- a/docs/changelogs/preview.md
+++ b/docs/changelogs/preview.md
@@ -1,6 +1,6 @@
-# Preview release: v0.54.0-preview.0
+# Preview release: v0.55.0-preview.1
 
-Released: July 28, 2026
+Released: August 06, 2026
 
 Our preview release includes the latest, new, and experimental features. This
 release may not be as stable as our [latest weekly release](latest.md).
@@ -26,6 +26,48 @@ npm install -g @google/gemini-cli@preview
 
 ## What's Changed
 
+- chore(release): bump version to 0.55.0-nightly.20260728.gd29268d36 by
+  @gemini-cli-robot in
+  [#28569](https://github.com/google-gemini/gemini-cli/pull/28569)
+- Changelog for v0.54.0-preview.0 by @gemini-cli-robot in
+  [#28567](https://github.com/google-gemini/gemini-cli/pull/28567)
+- Changelog for v0.53.0 by @gemini-cli-robot in
+  [#28568](https://github.com/google-gemini/gemini-cli/pull/28568)
+- chore/release: bump version to 0.55.0-nightly.20260729.g3499c84f7 by
+  @gemini-cli-robot in
+  [#28573](https://github.com/google-gemini/gemini-cli/pull/28573)
+- fix(core): classify capacity exhaustion as terminal to prevent retry hangs by
+  @luisfelipe-alt in
+  [#28599](https://github.com/google-gemini/gemini-cli/pull/28599)
+- fix(core,cli): propagate InvalidStreamError details to UI for specific empty
+  response guidance by @DavidAPierce in
+  [#28566](https://github.com/google-gemini/gemini-cli/pull/28566)
+- fix(cli): fall back to embedded macOS seatbelt profiles if missing by
+  @amelidev in [#28551](https://github.com/google-gemini/gemini-cli/pull/28551)
+- feat(pr-generator-core): add environment config parser, command executor,
+  GitHub R… by @joneba-google in
+  [#28435](https://github.com/google-gemini/gemini-cli/pull/28435)
+- feat(pr-generator-orchestrator): implement iterative bug-fixing state machine
+  and container worker entrypoint by @joneba-google in
+  [#28433](https://github.com/google-gemini/gemini-cli/pull/28433)
+- feat(pr-generator-infra): configure Cloud Run job, Workflows definition, and
+  Dockerfile by @joneba-google in
+  [#28431](https://github.com/google-gemini/gemini-cli/pull/28431)
+- fix(release): handle npm dist-tag deletion failures on registries that forbid
+  it by @DavidAPierce in
+  [#28694](https://github.com/google-gemini/gemini-cli/pull/28694)
+- fix(core): stop a new user message fusing into an unanswered tool response by
+  @adamfweidman in
+  [#28700](https://github.com/google-gemini/gemini-cli/pull/28700)
+- fix(core,cli): repair /compress session reload and quota-fallback tool
+  response loss by @adamfweidman in
+  [#28672](https://github.com/google-gemini/gemini-cli/pull/28672)
+- fix(core): preserve functionCall thoughtSignature when stripping thought parts
+  by @sarbojitrana in
+  [#28607](https://github.com/google-gemini/gemini-cli/pull/28607)
+- fix(core): unwrap and parse nested gaxios streaming errors from cause message
+  by @luisfelipe-alt in
+  [#28689](https://github.com/google-gemini/gemini-cli/pull/28689)
 - Changelog for v0.53.0-preview.0 by @gemini-cli-robot in
   [#28507](https://github.com/google-gemini/gemini-cli/pull/28507)
 - Changelog for v0.52.0 by @gemini-cli-robot in
@@ -68,4 +110,4 @@ npm install -g @google/gemini-cli@preview
   [#28565](https://github.com/google-gemini/gemini-cli/pull/28565)
 
 **Full Changelog**:
-https://github.com/google-gemini/gemini-cli/compare/v0.53.0-preview.0...v0.54.0-preview.0
+https://github.com/google-gemini/gemini-cli/compare/v0.53.0-preview.0...v0.55.0-preview.1