diff --git a/Changelog.txt b/Changelog.txt
index 121d9e3389..11692bb2c8 100644
--- a/Changelog.txt
+++ b/Changelog.txt
@@ -23,6 +23,44 @@
 # - title by author
 # }}}
 
+{{{ 8.4.0 2025-05-09
+
+:: new features
+
+- [2107778] KEPUB Output: Add an option to generate KEPUB files that have better text justification at the cost of gaps in highlighting when used on the Kobo
+
+- E-book viewer: Allow the background image specified in the Style section of the viewer preferences to extend under the page margins as well
+
+:: bug fixes
+
+- [2110117] E-book viewer: Fix a regression that broke the "show book in main calibre program" link
+
+- News download: Fix Next/Previous links not working when the pointed to article failed to download
+
+- E-book viewer: Handle links to missing internal files with an error popup rather than becoming non-functional
+
+- E-book viewer: Fix some links not being processed correctly for very large EPUB files with many internal HTML files
+
+- Get books: Update ebooks.com plugin for website changes
+
+- Metadata review dialog: Fix merging of tags not working correctly
+
+- [2109755] Wayland: Workaround Qt/Wayland bug that prevents the menu of the Layout button from showing
+
+- [2109612]  Prevent recursion when creating base temporary folder if something on system deletes the created temporary folder
+
+:: improved recipes
+- NYTimes Book Review
+- Washington Post
+- tagesschau
+- Hindu
+- Economist
+- Economist Espresso
+
+:: new recipes
+- Frieze Magazine by Kabonix
+}}}
+
 {{{ 8.3.0 2025-04-18
 
 :: new features
diff --git a/src/calibre/constants.py b/src/calibre/constants.py
index 5c4a6ab729..80442dc8f6 100644
--- a/src/calibre/constants.py
+++ b/src/calibre/constants.py
@@ -11,7 +11,7 @@ from functools import lru_cache
 from polyglot.builtins import environ_item, hasenv
 
 __appname__   = 'calibre'
-numeric_version = (8, 3, 100)
+numeric_version = (8, 4, 0)
 __version__   = '.'.join(map(str, numeric_version))
 git_version   = None
 __author__    = 'Kovid Goyal <kovid@kovidgoyal.net>'