diff --git a/modules/ui/src/app/components/version/version.component.html b/modules/ui/src/app/components/version/version.component.html
index 45a65faaf..d45ea69da 100644
--- a/modules/ui/src/app/components/version/version.component.html
+++ b/modules/ui/src/app/components/version/version.component.html
@@ -18,10 +18,7 @@
     mat-button
     class="version-content"
     [class.version-content-update]="version.update_available"
-    [attr.aria-label]="
-      version?.installed_version +
-      ' New version is available. Click here to update'
-    "
+    [attr.aria-label]="getVersionButtonLabel(version.installed_version)"
     (click)="openConsentDialog(version)">
     {{ version?.installed_version }}
     <span
diff --git a/modules/ui/src/app/components/version/version.component.spec.ts b/modules/ui/src/app/components/version/version.component.spec.ts
index f62e67261..a821c8328 100644
--- a/modules/ui/src/app/components/version/version.component.spec.ts
+++ b/modules/ui/src/app/components/version/version.component.spec.ts
@@ -16,7 +16,10 @@
 import { ComponentFixture, TestBed } from '@angular/core/testing';
 
 import { VersionComponent } from './version.component';
-import { TestRunService } from '../../services/test-run.service';
+import {
+  TestRunService,
+  UNAVAILABLE_VERSION,
+} from '../../services/test-run.service';
 import SpyObj = jasmine.SpyObj;
 import { BehaviorSubject } from 'rxjs/internal/BehaviorSubject';
 import { Version } from '../../model/version';
@@ -50,6 +53,21 @@ describe('VersionComponent', () => {
     expect(component).toBeTruthy();
   });
 
+  it('should get correct aria label for version button', () => {
+    const labelUnavailableVersion = component.getVersionButtonLabel(
+      UNAVAILABLE_VERSION.installed_version
+    );
+
+    const labelAvailableVersion = component.getVersionButtonLabel(
+      VERSION.installed_version
+    );
+
+    expect(labelUnavailableVersion).toContain(
+      'Version temporarily unavailable.'
+    );
+    expect(labelAvailableVersion).toContain('New version is available.');
+  });
+
   it('should open consent window on start', () => {
     const openSpy = spyOn(component.dialog, 'open').and.returnValue({
       afterClosed: () => of(true),
diff --git a/modules/ui/src/app/components/version/version.component.ts b/modules/ui/src/app/components/version/version.component.ts
index c5d7880a9..a85a3ce40 100644
--- a/modules/ui/src/app/components/version/version.component.ts
+++ b/modules/ui/src/app/components/version/version.component.ts
@@ -22,7 +22,10 @@ import {
   Output,
 } from '@angular/core';
 import { CommonModule } from '@angular/common';
-import { TestRunService } from '../../services/test-run.service';
+import {
+  TestRunService,
+  UNAVAILABLE_VERSION,
+} from '../../services/test-run.service';
 import { Version } from '../../model/version';
 import { MatButtonModule } from '@angular/material/button';
 import { MatDialog, MatDialogModule } from '@angular/material/dialog';
@@ -69,6 +72,12 @@ export class VersionComponent implements OnInit, OnDestroy {
     );
   }
 
+  getVersionButtonLabel(installedVersion: string): string {
+    return installedVersion === UNAVAILABLE_VERSION.installed_version
+      ? 'Version temporarily unavailable. Click to open the Welcome modal'
+      : `${installedVersion} New version is available. Click to update`;
+  }
+
   openConsentDialog(version: Version) {
     const dialogRef = this.dialog.open(ConsentDialogComponent, {
       ariaLabel: 'Welcome to Testrun modal window',