diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index f050eab13..8f088ad5b 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,7 +1,7 @@
 [bumpversion]
 commit = False
 tag = False
-current_version = 2.5.0-alpha.0
+current_version = 2.5.0-alpha.1
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\-(?P<pre>[a-z]+)\.(?P<build>\d+))?
 serialize = 
 	{major}.{minor}.{patch}-{pre}.{build}
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index b7b599b66..f33d905b6 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,43 @@
 SDK Changelog
 =============
 
+2.5.0-alpha.1 (2024-11-27)
+==========================
+
+Second preview release of the upcoming 2.5.0 version.
+
+New features
+------------
+
+* [#4320] Improved the user experience for forms with cosign
+    - The confirmation page content is now dynamically provided by the API.
+    - Tweaked the texts displayed in various points in the cosign process.
+    - Cosign login options are now only displayed if the cosign request email does not use direct links.
+      When direct links are used, the cosigner is directly taken to the cosign page without having to
+      manually enter codes.
+* [#4546] It's now possible to "soft-require" file uploads. Soft-required uploads show a warning message when
+  no file has been uploaded, but don't block the step submission or form progress.
+* [#4718] Improved accessibility when using an increased zoom level.
+* [#4720] Improved navigation and visibility accessibility.
+* [#4717] Improvement accessibility of the loader, modal components, alerts and file upload buttons.
+* [#4716] Improved the accessibility of form fields and associated error messages.
+
+Project maintenance
+-------------------
+
+* Ensured prettier checks jsx files.
+* [#4849] Ensured .jsx files are picked up for translation as well.
+* [#3283] Removed password Formio component.
+* Fixed button stories/documentation page.
+* [#4320] Updated stories and UX of completion view.
+* Renamed .js files to .jsx.
+* Removed old tilde prefix in SCSS imports.
+* [#724] Upgraded to Jest 29 because of MSW requirements.
+* Updated story after translations update.
+* Upgraded to MSW 2.5.
+* Updated actions with explicit mocks.
+* Upgraded to Storybook 8.3.6.
+
 2.4.2 (2024-11-22)
 ==================
 
diff --git a/README.NL.rst b/README.NL.rst
index 89069f466..e3eff3f6a 100644
--- a/README.NL.rst
+++ b/README.NL.rst
@@ -2,7 +2,7 @@
 Open Formulieren SDK
 ====================
 
-:Version: 2.5.0-alpha.0
+:Version: 2.5.0-alpha.1
 :Source: https://github.com/open-formulieren/open-forms-sdk
 :Keywords: e-Formulieren, Common Ground, FormIO, API
 
diff --git a/README.rst b/README.rst
index 24646f151..ee2f0ef3b 100644
--- a/README.rst
+++ b/README.rst
@@ -2,7 +2,7 @@
 Open Forms SDK
 ==============
 
-:Version: 2.5.0-alpha.0
+:Version: 2.5.0-alpha.1
 :Source: https://github.com/open-formulieren/open-forms-sdk
 :Keywords: e-Formulieren, Common Ground, FormIO, API
 
diff --git a/package-lock.json b/package-lock.json
index 00ec939b0..2d69e54d4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@open-formulieren/sdk",
-  "version": "2.5.0-alpha.0",
+  "version": "2.5.0-alpha.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@open-formulieren/sdk",
-      "version": "2.5.0-alpha.0",
+      "version": "2.5.0-alpha.1",
       "license": "EUPL-1.2",
       "workspaces": [
         "design-tokens"
diff --git a/package.json b/package.json
index 1d0bd690b..31eacd1a2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@open-formulieren/sdk",
-  "version": "2.5.0-alpha.0",
+  "version": "2.5.0-alpha.1",
   "private": true,
   "main": "dist/open-forms-sdk.js",
   "exports": {
diff --git a/publiccode.yaml b/publiccode.yaml
index f31754b26..fb43fb253 100644
--- a/publiccode.yaml
+++ b/publiccode.yaml
@@ -7,7 +7,7 @@ publiccodeYmlVersion: '0.2'
 name: Open Forms SDK
 url: 'http://github.com/open-formulieren/open-forms-sdk.git'
 softwareType: standalone/frontend
-softwareVersion: 2.5.0-alpha.0
+softwareVersion: 2.5.0-alpha.1
 releaseDate: 't.b.d.'
 logo: 'https://github.com/open-formulieren/open-forms/blob/master/docs/logo.svg'
 platforms: