diff --git a/AUTHORS b/AUTHORS
index cfea92e37..67335b7a3 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -49,6 +49,8 @@ Babel is written and maintained by the Babel team and various contributors:
 - Arturas Moskvinas
 - Leonardo Pistone
 - Hyunjun Kim
+- Ronan Amicel
+- Christian Clauss
 - Best Olunusi
 - Teo
 - Ivan Koldakov
diff --git a/CHANGES.rst b/CHANGES.rst
index 31b1bd543..d3a7b00b3 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,28 @@
 Babel Changelog
 ===============
 
+Version 2.15.0
+--------------
+
+Python version support
+~~~~~~~~~~~~~~~~~~~~~~
+
+* Babel 2.15.0 will require Python 3.8 or newer. (:gh:`1048`)
+
+Features
+~~~~~~~~
+
+* CLDR: Upgrade to CLDR 44 (:gh:`1071`) (@akx)
+* Dates: Support for the "fall back to short format" logic for time delta formatting (:gh:`1075`) (@akx)
+* Message: More versatile .po IO functions (:gh:`1068`) (@akx)
+* Numbers: Improved support for alternate spaces when parsing numbers (:gh:`1007`) (@ronnix's first contribution)
+
+Infrastructure
+~~~~~~~~~~~~~~
+
+* Upgrade GitHub Actions (:gh:`1054`) (@cclauss's first contribution)
+* The Unicode license is now included in `locale-data` and in the documentation (:gh:`1074`) (@akx)
+
 Version 2.14.0
 --------------
 
diff --git a/LICENSE b/LICENSE
index 41a1e593b..83b6e513d 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2013-2023 by the Babel Team, see AUTHORS for more information.
+Copyright (c) 2013-2024 by the Babel Team, see AUTHORS for more information.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
diff --git a/babel/__init__.py b/babel/__init__.py
index ff986e9ce..6a9789c52 100644
--- a/babel/__init__.py
+++ b/babel/__init__.py
@@ -12,7 +12,7 @@
        access to various locale display names, localized number and date
        formatting, etc.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 
@@ -25,7 +25,7 @@
     parse_locale,
 )
 
-__version__ = '2.14.0'
+__version__ = '2.15.0'
 
 __all__ = [
     'Locale',
diff --git a/babel/core.py b/babel/core.py
index 207c13b92..56a4ee503 100644
--- a/babel/core.py
+++ b/babel/core.py
@@ -4,7 +4,7 @@
 
     Core locale representation and locale data access.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 
diff --git a/babel/dates.py b/babel/dates.py
index c2e4f0cc7..df129604a 100644
--- a/babel/dates.py
+++ b/babel/dates.py
@@ -11,7 +11,7 @@
      * ``LC_ALL``, and
      * ``LANG``
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 
diff --git a/babel/lists.py b/babel/lists.py
index a8471fd1e..376bc963e 100644
--- a/babel/lists.py
+++ b/babel/lists.py
@@ -10,7 +10,7 @@
      * ``LC_ALL``, and
      * ``LANG``
 
-    :copyright: (c) 2015-2023 by the Babel Team.
+    :copyright: (c) 2015-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/babel/localedata.py b/babel/localedata.py
index f1e8a1291..a9f7d4bf9 100644
--- a/babel/localedata.py
+++ b/babel/localedata.py
@@ -7,7 +7,7 @@
     :note: The `Locale` class, which uses this module under the hood, provides a
            more convenient interface for accessing the locale data.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 
diff --git a/babel/localtime/__init__.py b/babel/localtime/__init__.py
index e1ece7342..1066c9511 100644
--- a/babel/localtime/__init__.py
+++ b/babel/localtime/__init__.py
@@ -5,7 +5,7 @@
     Babel specific fork of tzlocal to determine the local timezone
     of the system.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 
diff --git a/babel/localtime/_fallback.py b/babel/localtime/_fallback.py
index 14979a53b..7c99f488c 100644
--- a/babel/localtime/_fallback.py
+++ b/babel/localtime/_fallback.py
@@ -4,7 +4,7 @@
 
     Emulated fallback local timezone when all else fails.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 
diff --git a/babel/messages/__init__.py b/babel/messages/__init__.py
index 883a2e055..5a81b910f 100644
--- a/babel/messages/__init__.py
+++ b/babel/messages/__init__.py
@@ -4,7 +4,7 @@
 
     Support for ``gettext`` message catalogs.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 
diff --git a/babel/messages/catalog.py b/babel/messages/catalog.py
index 41adfaeee..9f215cf18 100644
--- a/babel/messages/catalog.py
+++ b/babel/messages/catalog.py
@@ -4,7 +4,7 @@
 
     Data structures for message catalogs.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/babel/messages/checkers.py b/babel/messages/checkers.py
index e5448e06b..df1159ded 100644
--- a/babel/messages/checkers.py
+++ b/babel/messages/checkers.py
@@ -6,7 +6,7 @@
 
     :since: version 0.9
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/babel/messages/extract.py b/babel/messages/extract.py
index 8e3779871..862e63743 100644
--- a/babel/messages/extract.py
+++ b/babel/messages/extract.py
@@ -12,7 +12,7 @@
     The main entry points into the extraction functionality are the functions
     `extract_from_dir` and `extract_from_file`.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/babel/messages/frontend.py b/babel/messages/frontend.py
index 34f9e8902..aeda9763b 100644
--- a/babel/messages/frontend.py
+++ b/babel/messages/frontend.py
@@ -4,7 +4,7 @@
 
     Frontends for the message extraction functionality.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 
diff --git a/babel/messages/jslexer.py b/babel/messages/jslexer.py
index 6456bd038..31f0582e3 100644
--- a/babel/messages/jslexer.py
+++ b/babel/messages/jslexer.py
@@ -5,7 +5,7 @@
     A simple JavaScript 1.5 lexer which is used for the JavaScript
     extractor.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/babel/messages/mofile.py b/babel/messages/mofile.py
index ca02e6837..0291b07cc 100644
--- a/babel/messages/mofile.py
+++ b/babel/messages/mofile.py
@@ -4,7 +4,7 @@
 
     Writing of files in the ``gettext`` MO (machine object) format.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/babel/messages/plurals.py b/babel/messages/plurals.py
index fa3f03ed8..01c38f4cd 100644
--- a/babel/messages/plurals.py
+++ b/babel/messages/plurals.py
@@ -4,7 +4,7 @@
 
     Plural form definitions.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/babel/messages/pofile.py b/babel/messages/pofile.py
index 6e9dbdf03..89a924255 100644
--- a/babel/messages/pofile.py
+++ b/babel/messages/pofile.py
@@ -5,7 +5,7 @@
     Reading and writing of files in the ``gettext`` PO (portable object)
     format.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/babel/numbers.py b/babel/numbers.py
index 6df1db8cb..624e8d61e 100644
--- a/babel/numbers.py
+++ b/babel/numbers.py
@@ -11,7 +11,7 @@
      * ``LC_ALL``, and
      * ``LANG``
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 # TODO:
diff --git a/babel/plural.py b/babel/plural.py
index 01df16c6d..3be412f69 100644
--- a/babel/plural.py
+++ b/babel/plural.py
@@ -4,7 +4,7 @@
 
     CLDR Plural support.  See UTS #35.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/babel/support.py b/babel/support.py
index 1774d9d85..e6ee37805 100644
--- a/babel/support.py
+++ b/babel/support.py
@@ -7,7 +7,7 @@
 
     .. note: the code in this module is not used by Babel itself
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/babel/util.py b/babel/util.py
index 093197f9f..605695b1f 100644
--- a/babel/util.py
+++ b/babel/util.py
@@ -4,7 +4,7 @@
 
     Various utility classes and functions.
 
-    :copyright: (c) 2013-2023 by the Babel Team.
+    :copyright: (c) 2013-2024 by the Babel Team.
     :license: BSD, see LICENSE for more details.
 """
 from __future__ import annotations
diff --git a/docs/conf.py b/docs/conf.py
index 3be498181..128eacd7d 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -44,16 +44,16 @@
 
 # General information about the project.
 project = 'Babel'
-copyright = '2023, The Babel Team'
+copyright = '2024, The Babel Team'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = '2.14'
+version = '2.15'
 # The full version, including alpha/beta/rc tags.
-release = '2.14.0'
+release = '2.15.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/scripts/dump_data.py b/scripts/dump_data.py
index b17beb7be..639c14d43 100755
--- a/scripts/dump_data.py
+++ b/scripts/dump_data.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/scripts/dump_global.py b/scripts/dump_global.py
index 1018a5392..8b8294014 100755
--- a/scripts/dump_global.py
+++ b/scripts/dump_global.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/scripts/import_cldr.py b/scripts/import_cldr.py
index 1ff39a8d9..633ca9a01 100755
--- a/scripts/import_cldr.py
+++ b/scripts/import_cldr.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/messages/test_catalog.py b/tests/messages/test_catalog.py
index 4e133304f..2df85debb 100644
--- a/tests/messages/test_catalog.py
+++ b/tests/messages/test_catalog.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/messages/test_checkers.py b/tests/messages/test_checkers.py
index ac1e1bc46..b2dc9dc4e 100644
--- a/tests/messages/test_checkers.py
+++ b/tests/messages/test_checkers.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/messages/test_extract.py b/tests/messages/test_extract.py
index 086702ed7..7d3a05aa7 100644
--- a/tests/messages/test_extract.py
+++ b/tests/messages/test_extract.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/messages/test_frontend.py b/tests/messages/test_frontend.py
index 225d6b358..448dd7357 100644
--- a/tests/messages/test_frontend.py
+++ b/tests/messages/test_frontend.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/messages/test_mofile.py b/tests/messages/test_mofile.py
index 986a74d6c..7a699041d 100644
--- a/tests/messages/test_mofile.py
+++ b/tests/messages/test_mofile.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/messages/test_plurals.py b/tests/messages/test_plurals.py
index 41438f58d..e9f8e80fd 100644
--- a/tests/messages/test_plurals.py
+++ b/tests/messages/test_plurals.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/messages/test_pofile.py b/tests/messages/test_pofile.py
index d322857d5..99958b7b7 100644
--- a/tests/messages/test_pofile.py
+++ b/tests/messages/test_pofile.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/test_core.py b/tests/test_core.py
index 2e7846214..1bec2155d 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/test_dates.py b/tests/test_dates.py
index f25dd6146..fb9013143 100644
--- a/tests/test_dates.py
+++ b/tests/test_dates.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/test_localedata.py b/tests/test_localedata.py
index d4eb4e597..8a4fbef1c 100644
--- a/tests/test_localedata.py
+++ b/tests/test_localedata.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/test_numbers.py b/tests/test_numbers.py
index eeb71a2fc..ed0531c27 100644
--- a/tests/test_numbers.py
+++ b/tests/test_numbers.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/test_plural.py b/tests/test_plural.py
index 2fa56cf4e..b10ccf5ad 100644
--- a/tests/test_plural.py
+++ b/tests/test_plural.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/test_support.py b/tests/test_support.py
index ccd8fe60b..126272051 100644
--- a/tests/test_support.py
+++ b/tests/test_support.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which
diff --git a/tests/test_util.py b/tests/test_util.py
index 8ea68b2bb..c661894c8 100644
--- a/tests/test_util.py
+++ b/tests/test_util.py
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2011 Edgewall Software, 2013-2023 the Babel team
+# Copyright (C) 2007-2011 Edgewall Software, 2013-2024 the Babel team
 # All rights reserved.
 #
 # This software is licensed as described in the file LICENSE, which