diff --git a/src/network/access/qrestaccessmanager.h b/src/network/access/qrestaccessmanager.h
index e65693e6a7..f23e2c8b6e 100644
--- a/src/network/access/qrestaccessmanager.h
+++ b/src/network/access/qrestaccessmanager.h
@@ -70,7 +70,7 @@ QNetworkReply *customWithDataImpl(const QNetworkRequest& request, const QByteArr
 /* end */
 
 class QRestAccessManagerPrivate;
-class Q_NETWORK_EXPORT QRestAccessManager : public QObject
+class QT_TECH_PREVIEW_API Q_NETWORK_EXPORT QRestAccessManager : public QObject
 {
     Q_OBJECT
     using CallbackPrototype = void(*)(QRestReply&);
diff --git a/src/network/access/qrestreply.h b/src/network/access/qrestreply.h
index 10add7b1a1..0c84ef8488 100644
--- a/src/network/access/qrestreply.h
+++ b/src/network/access/qrestreply.h
@@ -20,7 +20,7 @@ class QJsonDocument;
 class QString;
 
 class QRestReplyPrivate;
-class QRestReply
+class QT_TECH_PREVIEW_API QRestReply
 {
 public:
     Q_NETWORK_EXPORT explicit QRestReply(QNetworkReply *reply);