diff --git a/CHANGELOG.md b/CHANGELOG.md
index cfbc450d74..c6c0ff20d1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,26 @@
 
 All notable changes to this project will be documented in this file.
 
+## [4.5.7] - 2026-02-24
+
+### Security
+
+- Reject unconfirmed FASPs (#37926 by @oneiros, [GHSA-qgmm-vr4c-ggjg](https://github.com/mastodon/mastodon/security/advisories/GHSA-qgmm-vr4c-ggjg))
+- Re-use custom socket class for FASP requests (#37925 by @oneiros, [GHSA-46w6-g98f-wxqm](https://github.com/mastodon/mastodon/security/advisories/GHSA-46w6-g98f-wxqm))
+
+### Added
+
+- Add `--suspended-only` option to `tootctl emoji purge` (#37828 and #37861 by @ClearlyClaire and @mjankowski)
+
+### Fixed
+
+- Fix emoji data not being properly cached (#37858 by @ChaosExAnima)
+- Fix delete & redraft of pending posts (#37839 by @ClearlyClaire)
+- Fix processing separate key documents without the ActivityStreams context (#37826 by @ClearlyClaire)
+- Fix custom emojis not being purged on domain suspension (#37808 by @ClearlyClaire)
+- Fix users without special permissions being able to stream disabled timelines (#37791 by @ClearlyClaire)
+- Fix processing of object updates with duplicate hashtags (#37756 by @ClearlyClaire)
+
 ## [4.5.6] - 2026-02-03
 
 ### Security
diff --git a/app/controllers/api/v1/profiles_controller.rb b/app/controllers/api/v1/profiles_controller.rb
index 3e2cf0e3cd..196d0ef3a7 100644
--- a/app/controllers/api/v1/profiles_controller.rb
+++ b/app/controllers/api/v1/profiles_controller.rb
@@ -1,11 +1,41 @@
 # frozen_string_literal: true
 
 class Api::V1::ProfilesController < Api::BaseController
-  before_action -> { doorkeeper_authorize! :profile, :read, :'read:accounts' }
+  before_action -> { doorkeeper_authorize! :profile, :read, :'read:accounts' }, except: [:update]
+  before_action -> { doorkeeper_authorize! :write, :'write:accounts' }, only: [:update]
   before_action :require_user!
 
   def show
     @account = current_account
     render json: @account, serializer: REST::ProfileSerializer
   end
+
+  def update
+    @account = current_account
+    UpdateAccountService.new.call(@account, account_params, raise_error: true)
+    ActivityPub::UpdateDistributionWorker.perform_in(ActivityPub::UpdateDistributionWorker::DEBOUNCE_DELAY, @account.id)
+
+    render json: @account, serializer: REST::ProfileSerializer
+  rescue ActiveRecord::RecordInvalid => e
+    render json: ValidationErrorFormatter.new(e).as_json, status: 422
+  end
+
+  def account_params
+    params.permit(
+      :display_name,
+      :note,
+      :avatar,
+      :header,
+      :locked,
+      :bot,
+      :discoverable,
+      :hide_collections,
+      :indexable,
+      :show_media,
+      :show_media_replies,
+      :show_featured,
+      attribution_domains: [],
+      fields_attributes: [:name, :value]
+    )
+  end
 end
diff --git a/app/models/account.rb b/app/models/account.rb
index 6538df90ab..1b2da6ce0e 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -323,16 +323,16 @@ class Account < ApplicationRecord
     old_fields = self[:fields] || []
     old_fields = [] if old_fields.is_a?(Hash)
 
-    if attributes.is_a?(Hash)
-      attributes.each_value do |attr|
-        next if attr[:name].blank? && attr[:value].blank?
+    attributes = attributes.values if attributes.is_a?(Hash)
 
-        previous = old_fields.find { |item| item['value'] == attr[:value] }
+    attributes.each do |attr|
+      next if attr[:name].blank? && attr[:value].blank?
 
-        attr[:verified_at] = previous['verified_at'] if previous && previous['verified_at'].present?
+      previous = old_fields.find { |item| item['value'] == attr[:value] }
 
-        fields << attr
-      end
+      attr[:verified_at] = previous['verified_at'] if previous && previous['verified_at'].present?
+
+      fields << attr
     end
 
     self[:fields] = fields
diff --git a/config/routes/api.rb b/config/routes/api.rb
index 6042afc205..828029a01b 100644
--- a/config/routes/api.rb
+++ b/config/routes/api.rb
@@ -113,7 +113,7 @@ namespace :api, format: false do
     resources :endorsements, only: [:index]
     resources :markers, only: [:index, :create]
 
-    resource :profile, only: [:show] do
+    resource :profile, only: [:show, :update] do
       scope module: :profile do
         resource :avatar, only: :destroy
         resource :header, only: :destroy
diff --git a/docker-compose.yml b/docker-compose.yml
index cf0e198222..b189fecf63 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -59,7 +59,7 @@ services:
   web:
     # You can uncomment the following line if you want to not use the prebuilt image, for example if you have local code changes
     # build: .
-    image: ghcr.io/glitch-soc/mastodon:v4.5.6
+    image: ghcr.io/glitch-soc/mastodon:v4.5.7
     restart: always
     env_file: .env.production
     command: bundle exec puma -C config/puma.rb
@@ -83,7 +83,7 @@ services:
     # build:
     #   dockerfile: ./streaming/Dockerfile
     #   context: .
-    image: ghcr.io/glitch-soc/mastodon-streaming:v4.5.6
+    image: ghcr.io/glitch-soc/mastodon-streaming:v4.5.7
     restart: always
     env_file: .env.production
     command: node ./streaming/index.js
@@ -102,7 +102,7 @@ services:
   sidekiq:
     # You can uncomment the following line if you want to not use the prebuilt image, for example if you have local code changes
     # build: .
-    image: ghcr.io/glitch-soc/mastodon:v4.5.6
+    image: ghcr.io/glitch-soc/mastodon:v4.5.7
     restart: always
     env_file: .env.production
     command: bundle exec sidekiq
diff --git a/lib/mastodon/version.rb b/lib/mastodon/version.rb
index 5a64867efd..5231e44799 100644
--- a/lib/mastodon/version.rb
+++ b/lib/mastodon/version.rb
@@ -17,7 +17,7 @@ module Mastodon
     end
 
     def default_prerelease
-      'alpha.4'
+      'alpha.5'
     end
 
     def prerelease
diff --git a/spec/requests/api/v1/profiles_spec.rb b/spec/requests/api/v1/profiles_spec.rb
index d9c2ffaef5..fa4e8d9a57 100644
--- a/spec/requests/api/v1/profiles_spec.rb
+++ b/spec/requests/api/v1/profiles_spec.rb
@@ -53,6 +53,80 @@ RSpec.describe 'Profile API' do
     end
   end
 
+  describe 'PATCH /api/v1/profile' do
+    subject do
+      patch '/api/v1/profile', headers: headers, params: params
+    end
+
+    let(:params) do
+      {
+        avatar: fixture_file_upload('avatar.gif', 'image/gif'),
+        discoverable: true,
+        display_name: "Alice Isn't Dead",
+        header: fixture_file_upload('attachment.jpg', 'image/jpeg'),
+        indexable: true,
+        locked: false,
+        note: 'Hello!',
+        attribution_domains: ['example.com'],
+        fields_attributes: [
+          { name: 'pronouns', value: 'she/her' },
+          { name: 'foo', value: 'bar' },
+        ],
+      }
+    end
+
+    it_behaves_like 'forbidden for wrong scope', 'read read:accounts'
+
+    describe 'with invalid data' do
+      let(:params) { { note: 'a' * 2 * Account::NOTE_LENGTH_LIMIT } }
+
+      it 'returns http unprocessable entity' do
+        subject
+        expect(response).to have_http_status(422)
+        expect(response.content_type)
+          .to start_with('application/json')
+        expect(response.parsed_body)
+          .to include(
+            error: /Validation failed/,
+            details: include(note: contain_exactly(include(error: 'ERR_TOO_LONG', description: /character limit/)))
+          )
+      end
+    end
+
+    it 'returns http success with updated JSON attributes' do
+      subject
+
+      expect(response)
+        .to have_http_status(200)
+      expect(response.content_type)
+        .to start_with('application/json')
+      expect(response.parsed_body)
+        .to include({
+          locked: false,
+        })
+      expect(user.account.reload)
+        .to have_attributes(
+          display_name: eq("Alice Isn't Dead"),
+          note: 'Hello!',
+          avatar: exist,
+          header: exist,
+          attribution_domains: ['example.com'],
+          fields: contain_exactly(
+            have_attributes(
+              name: 'pronouns',
+              value: 'she/her'
+            ),
+            have_attributes(
+              name: 'foo',
+              value: 'bar'
+            )
+          )
+        )
+      expect(ActivityPub::UpdateDistributionWorker)
+        .to have_enqueued_sidekiq_job(user.account_id)
+    end
+  end
+
   describe 'DELETE /api/v1/profile/avatar' do
     context 'with wrong scope' do
       before do