diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13c97e88..4f8d93c0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,41 @@
 # CHANGELOG
 
 
+## v1.3.4 (2026-09-30)
+
+### Bug Fixes
+
+- Update color of the mounted row in AareGUI
+  ([`70f9a14`](https://gitea.psi.ch/mx/AareDAQ/commit/70f9a143253aa99cc5a3052087843e3b6eb0e0b3))
+
+- **gui**: Fire mount auto-centering on the first idle status tick
+  ([`3409d01`](https://gitea.psi.ch/mx/AareDAQ/commit/3409d01efdd75e778675d7fb1d9cfa4e70b604ea))
+
+The "apply after mounting" checkbox clicked Auto Centering as soon as the status poll showed a new
+  sample id. /sample/mount still holds the hw lock at that point, /alc/center_loop takes the same
+  lock non-blocking, and the resulting BeamlineBusyException is a quiet error the GUI swallows. So
+  the automatic click never did anything; only a later manual click worked.
+
+Arm on the sample-id change and click on the first status tick with busy=False, which is exactly
+  what the user did by hand. Skip arming while queue automation runs: it mounts and centers on its
+  own and frees the lock between /scan/auto calls, so a GUI centering in that gap would steal the
+  lock from the next scan. Pause during a scan's mount phase can still arm that one sample, but
+  Pause ends in an unmount, so the window is a ms-wide lock gap sampled at 2 Hz; accepted, noted in
+  the code.
+
+Supersedes the three-commit approach on fix/auto-center-after-mount-wait-idle (PR 243).
+
+Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
+
+- **gui**: Remove not longer needed return to main window at close and cleanup
+  ([`2c388ff`](https://gitea.psi.ch/mx/AareDAQ/commit/2c388ff7ad6dca80ef092305541a6be8749cde7c))
+
+### Testing
+
+- Patch the test
+  ([`5cb32ba`](https://gitea.psi.ch/mx/AareDAQ/commit/5cb32ba5fca61fd7d2d81f0a6189516d2dc9937e))
+
+
 ## v1.3.3 (2026-09-29)
 
 ### Bug Fixes
diff --git a/pyproject.toml b/pyproject.toml
index 580fc6fe..6a14432e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "aaredaq"
-version = "1.3.3"
+version = "1.3.4"
 description = "AareDAQ (with GUI)"
 readme = "README.md"
 requires-python = ">=3.11"