diff --git a/containers/libreportal/frontend/components/apps/overview/js/overview-manager.js b/containers/libreportal/frontend/components/apps/overview/js/overview-manager.js
index 392a526..a638da6 100644
--- a/containers/libreportal/frontend/components/apps/overview/js/overview-manager.js
+++ b/containers/libreportal/frontend/components/apps/overview/js/overview-manager.js
@@ -306,6 +306,7 @@ class OverviewManager {
         case 'update': this.updater.applyUpdate(app); break;
         case 'update-all': this.updater.applyAll(); break;
         case 'rollback': this.updater.rollback(app); break;
+        case 'upgrade': this.updater.upgrade(app, ua.dataset.version); break;
         case 'apply-artifact': this.updater.applyArtifact(ua.dataset.id); break;
         case 'revert-artifact': this.updater.revertArtifact(ua.dataset.id); break;
       }
diff --git a/containers/libreportal/frontend/components/tasks/js/tasks-format.js b/containers/libreportal/frontend/components/tasks/js/tasks-format.js
index 6520cb7..04996a8 100644
--- a/containers/libreportal/frontend/components/tasks/js/tasks-format.js
+++ b/containers/libreportal/frontend/components/tasks/js/tasks-format.js
@@ -145,6 +145,7 @@ Object.assign(TasksManager.prototype, {
       'system_health_heal': 'Fix System Issues', 'system_network_heal': 'Heal Network',
       'updater_check': 'Check for Updates', 'updater_apply': 'Update',
       'updater_apply_all': 'Update All', 'updater_rollback': 'Roll Back',
+      'updater_upgrade': 'Upgrade Version',
       'artifact_apply': 'Apply Hotfix', 'artifact_revert': 'Revert Hotfix',
       'app_add': 'Add App',
       'setup-config': 'Apply Configuration',
diff --git a/containers/libreportal/frontend/components/tasks/js/tasks-list-render.js b/containers/libreportal/frontend/components/tasks/js/tasks-list-render.js
index 7980263..1166ca6 100644
--- a/containers/libreportal/frontend/components/tasks/js/tasks-list-render.js
+++ b/containers/libreportal/frontend/components/tasks/js/tasks-list-render.js
@@ -328,6 +328,7 @@ Object.assign(TasksManager.prototype, {
       'updater_apply': { icon: '⬆️', class: 'update' },
       'updater_apply_all': { icon: '⬆️', class: 'update' },
       'updater_rollback': { icon: '↩️', class: 'restore' },
+      'updater_upgrade': { icon: '⏫', class: 'update' },
       'artifact_apply': { icon: '⚡', class: 'update' },
       'artifact_revert': { icon: '↩️', class: 'restore' },
       'custom': { icon: '⚙️', class: 'custom' }
diff --git a/containers/libreportal/frontend/components/updater/js/updater-page.js b/containers/libreportal/frontend/components/updater/js/updater-page.js
index f7837ea..ffe1ad3 100644
--- a/containers/libreportal/frontend/components/updater/js/updater-page.js
+++ b/containers/libreportal/frontend/components/updater/js/updater-page.js
@@ -109,6 +109,7 @@ class UpdaterPage {
         case 'update':     this.applyUpdate(app); break;
         case 'update-all': this.applyAll(); break;
         case 'rollback':   this.rollback(app); break;
+        case 'upgrade':    this.upgrade(app, action.dataset.version); break;
         case 'apply-artifact':  this.applyArtifact(action.dataset.id); break;
         case 'revert-artifact': this.revertArtifact(action.dataset.id); break;
         case 'goto':       this.switchTab(action.dataset.tab); break;
@@ -301,6 +302,33 @@ class UpdaterPage {
     if (!app) return;
     this.dispatch('updater_rollback', { app }, `Rolling ${app} back to its pre-update snapshot…`);
   }
+  // Cross-version upgrade. Always confirmed, and never quietly: this walks
+  // real migrations one release at a time and can take a long while, so the
+  // dialog states the plan and the guarantee rather than asking "are you sure?".
+  upgrade(app, version) {
+    if (!app) return;
+    const a = this.apps.find((x) => x.name === app) || {};
+    const from = a.channel || a.current_version || 'the current version';
+    const to = version || a.newer_version || 'the newest release';
+    const body = `
+      <div class="updater-detail-section">
+        <p><strong>${this.escape(app)}</strong> will move from <strong>${this.escape(from)}</strong>
+           to <strong>${this.escape(to)}</strong>, one release at a time.</p>
+        <p class="updater-detail-meta">Every step takes its own recovery snapshot first, then waits for
+           ${this.escape(app)} to confirm it is serving that version with no migration outstanding.
+           If any step fails it is rolled back and the upgrade stops there, leaving the app on the last
+           version that verified.</p>
+        <p class="updater-detail-meta">This can take a long time — each release runs its own database
+           migration. Watch it in Tasks.</p>
+      </div>`;
+    const go = () => this.dispatch('updater_upgrade', { app, version: version || '' },
+      `Upgrading ${app} to ${to}, one release at a time…`);
+    if (window.showConfirmation) {
+      window.showConfirmation(`Upgrade ${app} to ${to}?`, '', go, 'Start upgrade', 'Cancel', 'warning', false, '', body);
+    } else if (window.confirm(`Upgrade ${app} from ${from} to ${to}, one release at a time?`)) {
+      go();
+    }
+  }
   applyArtifact(id) {
     if (!id) return;
     this.dispatch('artifact_apply', { id }, `Applying hotfix ${id} (a snapshot is taken first)…`);
@@ -555,7 +583,8 @@ class UpdaterPage {
       // current on the version you track — while still saying a newer one
       // exists and what to do about it.
       const newerLine = a.newer_version
-        ? `<div class="updater-detail-row"><span class="updater-detail-meta">A newer release line is available: <strong>${this.escape(a.newer_version)}</strong> (you track ${this.escape(a.channel || '—')}). Automatic updates keep you current within your line; to move, set <strong>Version</strong> on this app's Advanced config tab after checking the release notes.</span></div>`
+        ? `<div class="updater-detail-row"><span class="updater-detail-meta">A newer release line is available: <strong>${this.escape(a.newer_version)}</strong> (you track ${this.escape(a.channel || '—')}). Automatic updates keep you current within your line. Upgrading walks the releases one at a time, snapshotting and verifying each — read the release notes first.</span>
+           <button class="updater-btn" data-updater-action="upgrade" data-app="${this.escape(a.name)}" data-version="${this.escape(a.newer_version)}">Upgrade to ${this.escape(a.newer_version)}</button></div>`
         : '';
       versionSection = `<div class="updater-detail-section"><h4>Version</h4>
         <div class="updater-detail-row">${badge} <span class="updater-row-ver">${cur}${avail ? ` <span class="updater-arrow">→</span> <strong>${avail}</strong>` : ''}</span></div>
diff --git a/containers/libreportal/frontend/core/tasks/js/task-actions.js b/containers/libreportal/frontend/core/tasks/js/task-actions.js
index dfcf5cd..cadc2e2 100755
--- a/containers/libreportal/frontend/core/tasks/js/task-actions.js
+++ b/containers/libreportal/frontend/core/tasks/js/task-actions.js
@@ -328,6 +328,18 @@ async configUpdate(changes) {
       return await this.executeTask('updater_apply', app, `libreportal updater apply ${app}`, `Update ${app}`);
     } catch (error) { throw new Error(`Failed to update ${app}: ${error.message}`); }
   }
+  // Stepped, cross-version upgrade. Separate from updaterApply because the CLI
+  // verb is separate: apply moves within a release line, upgrade walks between
+  // lines one version at a time, snapshotting and verifying every step. Passing
+  // no version means "climb to the newest".
+  async updaterUpgrade(app, version) {
+    if (!app) throw new Error('No app specified');
+    try {
+      const v = (version || '').toString().trim();
+      const cmd = v ? `libreportal updater upgrade ${app} ${v}` : `libreportal updater upgrade ${app}`;
+      return await this.executeTask('updater_upgrade', app, cmd, `Upgrade ${app}${v ? ` to ${v}` : ''}`);
+    } catch (error) { throw new Error(`Failed to upgrade ${app}: ${error.message}`); }
+  }
   async updaterApplyAll(apps) {
     try {
       const list = (apps || '').toString();
diff --git a/containers/libreportal/frontend/core/tasks/js/task-router.js b/containers/libreportal/frontend/core/tasks/js/task-router.js
index a2e44f1..1ac2931 100755
--- a/containers/libreportal/frontend/core/tasks/js/task-router.js
+++ b/containers/libreportal/frontend/core/tasks/js/task-router.js
@@ -87,6 +87,8 @@ class TaskRouter {
           return await this.actions.updaterApplyAll(params.apps);
         case 'updater_rollback':
           return await this.actions.updaterRollback(params.app);
+        case 'updater_upgrade':
+          return await this.actions.updaterUpgrade(params.app, params.version);
 
         // Hotfix channel (components/updater "Improvements") — apply/revert one
         // signed hotfix via the locked-down `libreportal artifact` CLI as a task.