diff --git a/src/plugins/help/helpmanager.cpp b/src/plugins/help/helpmanager.cpp
index c3e0bd31512..69fe0dabf9e 100644
--- a/src/plugins/help/helpmanager.cpp
+++ b/src/plugins/help/helpmanager.cpp
@@ -7,7 +7,9 @@
 
 #include <coreplugin/icore.h>
 #include <coreplugin/progressmanager/progressmanager.h>
+
 #include <utils/algorithm.h>
+#include <utils/asynctask.h>
 #include <utils/filesystemwatcher.h>
 #include <utils/qtcassert.h>
 #include <utils/runextensions.h>
@@ -17,6 +19,7 @@
 #include <QDesktopServices>
 #include <QDir>
 #include <QFileInfo>
+#include <QPromise>
 #include <QStringList>
 #include <QUrl>
 
@@ -99,7 +102,7 @@ void HelpManager::registerDocumentation(const QStringList &files)
         return;
     }
 
-    QFuture<bool> future = Utils::runAsync(&HelpManager::registerDocumentationNow, files);
+    QFuture<bool> future = Utils::asyncRun(&HelpManager::registerDocumentationNow, files);
     Utils::onResultReady(future, this, [](bool docsChanged){
         if (docsChanged) {
             d->m_helpEngine->setupData();
@@ -122,13 +125,12 @@ void HelpManager::unregisterDocumentation(const QStringList &fileNames)
     unregisterNamespaces(getNamespaces(fileNames));
 }
 
-void HelpManager::registerDocumentationNow(QFutureInterface<bool> &futureInterface,
-                                           const QStringList &files)
+void HelpManager::registerDocumentationNow(QPromise<bool> &promise, const QStringList &files)
 {
     QMutexLocker locker(&d->m_helpengineMutex);
 
-    futureInterface.setProgressRange(0, files.count());
-    futureInterface.setProgressValue(0);
+    promise.setProgressRange(0, files.count());
+    promise.setProgressValue(0);
 
     QHelpEngineCore helpEngine(collectionFilePath());
     helpEngine.setReadOnly(false);
@@ -136,9 +138,9 @@ void HelpManager::registerDocumentationNow(QFutureInterface<bool> &futureInterfa
     bool docsChanged = false;
     QStringList nameSpaces = helpEngine.registeredDocumentations();
     for (const QString &file : files) {
-        if (futureInterface.isCanceled())
+        if (promise.isCanceled())
             break;
-        futureInterface.setProgressValue(futureInterface.progressValue() + 1);
+        promise.setProgressValue(promise.future().progressValue() + 1);
         const QString &nameSpace = QHelpEngineCore::namespaceName(file);
         if (nameSpace.isEmpty())
             continue;
@@ -152,7 +154,7 @@ void HelpManager::registerDocumentationNow(QFutureInterface<bool> &futureInterfa
             }
         }
     }
-    futureInterface.reportResult(docsChanged);
+    promise.addResult(docsChanged);
 }
 
 void HelpManager::unregisterNamespaces(const QStringList &nameSpaces)
diff --git a/src/plugins/help/helpmanager.h b/src/plugins/help/helpmanager.h
index d868e96256e..6ab3e72cd97 100644
--- a/src/plugins/help/helpmanager.h
+++ b/src/plugins/help/helpmanager.h
@@ -5,12 +5,16 @@
 
 #include <coreplugin/helpmanager_implementation.h>
 
-QT_FORWARD_DECLARE_CLASS(QUrl)
-
 #include <QFutureInterface>
 #include <QHelpEngineCore>
 #include <QVariant>
 
+QT_BEGIN_NAMESPACE
+template <typename T>
+class QPromise;
+class QUrl;
+QT_END_NAMESPACE
+
 namespace Help {
 namespace Internal {
 
@@ -55,10 +59,9 @@ public:
         const QUrl &url,
         Core::HelpManager::HelpViewerLocation location = Core::HelpManager::HelpModeAlways) override;
 
-
     static void setupHelpManager();
-    static void registerDocumentationNow(QFutureInterface<bool> &futureInterface,
-                                         const QStringList &fileNames);
+    static void registerDocumentationNow(QPromise<bool> &promise, const QStringList &fileNames);
+
 signals:
     void collectionFileChanged();
     void helpRequested(const QUrl &url, Core::HelpManager::HelpViewerLocation location);