diff --git a/.tito/packages/mock b/.tito/packages/mock
index 0a198f793..d1fe7374f 100644
--- a/.tito/packages/mock
+++ b/.tito/packages/mock
@@ -1 +1 @@
-5.2-1 mock/
+5.3-1 mock/
diff --git a/docs/Release-Notes-5.3.md b/docs/Release-Notes-5.3.md
new file mode 100644
index 000000000..a888bf254
--- /dev/null
+++ b/docs/Release-Notes-5.3.md
@@ -0,0 +1,97 @@
+---
+layout: default
+title: Release Notes - Mock v5.3
+---
+
+Released on 2023-12-13.
+
+### Mock 5.3 new features
+
+- A new plugin to pre-process spec files with rpmautospec [has been
+  implemented][PR#1253].
+
+  If this plugin is enabled, mock pre-processes spec files that use rpmautospec
+  features (for automatic release numbering and changelog generation) before
+  building a source RPM.
+
+- Only run the `%prep` section once when running `%generate_buildrequires`
+  multiple times.
+  Previously Mock run `%prep` repeatedly before each `%generate_buildrequires`
+  round except for the last one.  This was inconsistent and unnecessary
+  slow/wasteful.
+
+  When the original support for `%generate_buildrequires` landed into Mock,
+  the intention was to only call `%prep` once.
+  However when Mock added support for multiple rounds of
+  `%generate_buildrequires`, `%prep` ended up only being skipped in the final
+  `rpmbuild` call. This was an oversight.  `%prep` is now only called once, as
+  originally intended.
+
+  Some RPM packages might be affected by the change, especially if a dirty
+  working directory after running `%generate_buildrequires` affects the results
+  of subsequent rounds of `%generate_buildrequires`.  However, such behavior was
+  undefined and quite buggy even previously, due to the lack of the `%prep`
+  section in the final `rpmbuild` call.
+
+  Packages that need to run commands before every round of
+  `%generate_buildrequires` should place those commands in the
+  `%generate_buildrequires` section itself rather than `%prep`.
+
+- The automatic killing feature for orphan processes within the chroot environment
+  [was][PR#1255] [improved][PR#1268] to also provide the user with information
+  about the command-line arguments of the terminated process:
+
+  `WARNING: Leftover process 1331205 is being killed with signal 15: daemon --with-arg`
+
+- The info about package management tooling used to install the target buildroot
+  has been updated to provide the info earlier, before the buildroot
+  installation happens.  Mock newly informs also about dnf5 presence.
+
+
+### Bugfixes
+
+- The Bash completion bug in Mock for options accepting multiple arguments,
+  tracked in the [long-standing issue][issue#746], has been resolved through [PR#1262].
+
+- If DNF 5 sees an "interactive" TTY on stdout, it will try to draw progress bars
+  and cause the Mock logs to [be garbled](https://github.com/fedora-copr/copr/issues/3040).
+  This release brings a fix that simply sets the output of DNF5 to a pipe instead
+  of a PTY.
+
+- When Mock completes the installation of all the requirements generated
+  by `%generate_buildrequries`, it calls `rpmbuild -ba` to perform a final build
+  of the package.
+
+  During the final build, `%generate_buildrequries` runs again in order to
+  generate a list of `BuildRequires` to be added to the built SRPM metadata.
+  An arbitrary `%generate_buildrequries` section may generate different
+  requirements that may not have been installed.
+
+  Previously, the `rpmbuild -ba` call used the `--nodeps` option,
+  hence it was [possible to successfully build a package with
+  unsatisfiable BuildRequires in the built SRPM metadata][issue#1246].
+
+  When a bootstrap chroot is used, the `--nodeps` option is
+  [no longer used][PR#1249] in the final `rpmbuild -ba` call.
+  If `%generate_buildrequries` attempts to generate new unsatisfied requirements
+  during the final build, the build will fail.
+  When a bootstrap chroot is not used, the `--nodeps` option remains because
+  Mock cannot know if the RPM in chroot can read the RPM database.
+
+**Following contributors contributed to this release:**
+
+ * Evan Goode
+ * Jakub Kadlcik
+ * Miro Hrončok
+ * Orion Poplawski
+ * Stephen Gallagh
+
+Thank you!
+
+[issue#746]: https://github.com/rpm-software-management/mock/issues/746
+[PR#1268]: https://github.com/rpm-software-management/mock/pull/1268
+[issue#1246]: https://github.com/rpm-software-management/mock/issues/1246
+[PR#1255]: https://github.com/rpm-software-management/mock/pull/1255
+[PR#1262]: https://github.com/rpm-software-management/mock/pull/1262
+[PR#1249]: https://github.com/rpm-software-management/mock/pull/1249
+[PR#1253]: https://github.com/rpm-software-management/mock/pull/1253
diff --git a/docs/index.md b/docs/index.md
index 25a51d7d0..f457d6d88 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -69,6 +69,7 @@ Versions in Linux distributions:
 
 
 ## Release Notes
+* [5.3](Release-Notes-5.3) (2023-12-13) - New "rpmautospec" plugin added, `%generate_buildrequries` fixes landed.
 * [Configs 39.3](Release-Notes-Configs-39.3) - Fedora 40+ configuration uses DNF5, Fedora ELN and OpenMandriva fixes.
 * [Configs 39.2](Release-Notes-39.2) - Fedora ELN and openSUSE fixes.
 * [5.2](Release-Notes-5.2) (2023-09-27) - Compatibility fix with EPEL 8, logging fixes, `--copyout` files with tilde in name.
diff --git a/mock/mock.spec b/mock/mock.spec
index 35021d630..2ccaeb1b1 100644
--- a/mock/mock.spec
+++ b/mock/mock.spec
@@ -9,7 +9,7 @@
 
 Summary: Builds packages inside chroots
 Name: mock
-Version: 5.2.post1
+Version: 5.3
 Release: 1%{?dist}
 License: GPL-2.0-or-later
 # Source is created by
@@ -289,6 +289,17 @@ pylint-3 py/mockbuild/ py/*.py py/mockbuild/plugins/* || :
 %dir  %{_datadir}/cheat
 
 %changelog
+* Wed Dec 13 2023 Pavel Raiskup <praiskup@redhat.com> 5.3-1
+- orphanskill: log command line arguments of the terminated process
+- docs: migrate the community from IRC to Matrix
+- dnf5: don't output to a PTY (mail@evangoo.de)
+- new rpmautospec plugin (sgallagh@redhat.com, nils@redhat.com)
+- fix bash completion with multiple file arguments (orion@nwra.com)
+- only %%prep once when running %%generate_buildrequires multiple times (miro@hroncok.cz)
+- Dynamic BuildRequires: Prevent generation of unsatisfied dependency (miro@hroncok.cz)
+- Identify buildroot package management earlier (praiskup@redhat.com)
+- Dump also dnf5 info into logs
+
 * Wed Sep 27 2023 Pavel Raiskup <praiskup@redhat.com> 5.2-1
 - Fix '~' user source expansion for --copyout
 - Compatibility fix with EL 8
diff --git a/releng/release-notes-next/bash-completion-multiple-args.bugfix b/releng/release-notes-next/bash-completion-multiple-args.bugfix
deleted file mode 100644
index e2c2a6868..000000000
--- a/releng/release-notes-next/bash-completion-multiple-args.bugfix
+++ /dev/null
@@ -1,2 +0,0 @@
-The Bash completion bug in Mock for options accepting multiple arguments,
-tracked in the [long-standing issue][issue#746], has been resolved through [PR#1262].
diff --git a/releng/release-notes-next/better-orphankill-report.feature b/releng/release-notes-next/better-orphankill-report.feature
deleted file mode 100644
index fb18686c1..000000000
--- a/releng/release-notes-next/better-orphankill-report.feature
+++ /dev/null
@@ -1,5 +0,0 @@
-The automatic killing feature for orphan processes within the chroot environment
-[was][PR#1255] [improved][PR#1268] to also provide the user with information
-about the command-line arguments of the terminated process:
-
-`WARNING: Leftover process 1331205 is being killed with signal 15: daemon --with-arg`
diff --git a/releng/release-notes-next/dnf5-logs-with-no-pty.bugfix b/releng/release-notes-next/dnf5-logs-with-no-pty.bugfix
deleted file mode 100644
index 77a230138..000000000
--- a/releng/release-notes-next/dnf5-logs-with-no-pty.bugfix
+++ /dev/null
@@ -1,4 +0,0 @@
-If DNF 5 sees an "interactive" TTY on stdout, it will try to draw progress bars
-and cause the Mock logs to [be garbled](https://github.com/fedora-copr/copr/issues/3040).
-This release brings a fix that simply sets the output of DNF5 to a pipe instead
-of a PTY.
diff --git a/releng/release-notes-next/generate_buildrequires.bug b/releng/release-notes-next/generate_buildrequires.bug
deleted file mode 100644
index 70f72b012..000000000
--- a/releng/release-notes-next/generate_buildrequires.bug
+++ /dev/null
@@ -1,19 +0,0 @@
-When Mock completes the installation of all the requirements generated
-by `%generate_buildrequries`, it calls `rpmbuild -ba` to perform a final build
-of the package.
-
-During the final build, `%generate_buildrequries` runs again in order to
-generate a list of `BuildRequires` to be added to the built SRPM metadata.
-An arbitrary `%generate_buildrequries` section may generate different
-requirements that may not have been installed.
-
-Previously, the `rpmbuild -ba` call used the `--nodeps` option,
-hence it was [possible to successfully build a package with
-unsatisfiable BuildRequires in the built SRPM metadata][issue#1246].
-
-When a bootstrap chroot is used, the `--nodeps` option is
-[no longer used][PR#1249] in the final `rpmbuild -ba` call.
-If `%generate_buildrequries` attempts to generate new unsatisfied requirements
-during the final build, the build will fail.
-When a bootstrap chroot is not used, the `--nodeps` option remains becasue
-Mock cannot know if the RPM in chroot can read the RPM database.
diff --git a/releng/release-notes-next/generate_buildrequires_prep.feature b/releng/release-notes-next/generate_buildrequires_prep.feature
deleted file mode 100644
index 2a0aaf552..000000000
--- a/releng/release-notes-next/generate_buildrequires_prep.feature
+++ /dev/null
@@ -1,22 +0,0 @@
-Only run the `%prep` section once when running `%generate_buildrequires`
-multiple times.
-Previously Mock run `%prep` repeatedly before each `%generate_buildrequires`
-round except for the last one.
-This was inconsistent and unnecessary slow/wasteful.
-
-When the original support for `%generate_buildrequires` landed into Mock,
-the intention was to only call `%prep` once.
-However when Mock added support for multiple rounds of
-`%generate_buildrequires`, `%prep` ended up only being skipped in the final
-`rpmbuild` call. This was an oversight.
-`%prep` is now only called once, as originally intended.
-
-Some RPM packages might be affected by the change, especially if a dirty
-working directory after running `%generate_buildrequires` affects the results
-of subsequent rounds of `%generate_buildrequires`.
-However, such behavior was undefined and quite buggy even previously,
-due to the lack of the `%prep` section in the final `rpmbuild` call.
-
-Packages that need to run commands before every round of
-`%generate_buildrequires` should place those commands in
-the `%generate_buildrequires` section itself rather than `%prep`.
diff --git a/releng/release-notes-next/package-management-logging.feature b/releng/release-notes-next/package-management-logging.feature
deleted file mode 100644
index 9a1d595f9..000000000
--- a/releng/release-notes-next/package-management-logging.feature
+++ /dev/null
@@ -1,3 +0,0 @@
-The info about package management tooling used to install the target buildroot
-has been updated to provide the info earlier, before the buildroot installation
-happens.  Mock newly informs also about dnf5 presence.
diff --git a/releng/release-notes-next/rpmautospec-plugin.feature b/releng/release-notes-next/rpmautospec-plugin.feature
deleted file mode 100644
index ff1d746ac..000000000
--- a/releng/release-notes-next/rpmautospec-plugin.feature
+++ /dev/null
@@ -1,4 +0,0 @@
-A new plugin to pre-process spec files with rpmautospec [has been implemented](PR#1253).
-
-If this plugin is enabled, mock pre-processes spec files that use rpmautospec features (for
-automatic release numbering and changelog generation) before building a source RPM.