Index: autotests/davcollectionsmultifetchjobtest.cpp
===================================================================
--- autotests/davcollectionsmultifetchjobtest.cpp
+++ autotests/davcollectionsmultifetchjobtest.cpp
@@ -23,7 +23,7 @@
 
 void DavCollectionsMultiFetchJobTest::runSuccessfullTest()
 {
-    FakeServer fakeServer;
+    FakeServer fakeServer(5990);
     QUrl url(QStringLiteral("http://localhost/caldav"));
     url.setPort(fakeServer.port());
     KDAV::DavUrl davUrl1(url, KDAV::CalDav);
Index: autotests/davitemfetchjobtest.cpp
===================================================================
--- autotests/davitemfetchjobtest.cpp
+++ autotests/davitemfetchjobtest.cpp
@@ -21,7 +21,7 @@
 
 void DavItemFetchJobTest::runSuccessfullTest()
 {
-    FakeServer fakeServer;
+    FakeServer fakeServer(5989);
     QUrl url(QStringLiteral("http://localhost/item"));
     url.setPort(fakeServer.port());
     KDAV::DavUrl davUrl(url, KDAV::CardDav);
Index: autotests/fakeserver.h
===================================================================
--- autotests/fakeserver.h
+++ autotests/fakeserver.h
@@ -81,7 +81,10 @@
     Q_OBJECT
 
 public:
-    FakeServer(QObject *parent = nullptr);
+    /**
+     * Each unittest should use a different port so that they can be run in parallel
+     */
+    FakeServer(int port = 5989, QObject *parent = nullptr);
     ~FakeServer();
 
     /**
Index: autotests/fakeserver.cpp
===================================================================
--- autotests/fakeserver.cpp
+++ autotests/fakeserver.cpp
@@ -16,9 +16,9 @@
 #include <QFile>
 #include <QTest>
 
-FakeServer::FakeServer(QObject *parent)
+FakeServer::FakeServer(int port, QObject *parent)
     : QThread(parent)
-    , m_port(5989)
+    , m_port(port)
 {
     moveToThread(this);
 }