diff --git a/kate/katetabbar.h b/kate/katetabbar.h
--- a/kate/katetabbar.h
+++ b/kate/katetabbar.h
@@ -116,6 +116,21 @@
     QString tabText(int index) const;
 
     /**
+     * Sets the URL of the tab with ID \a id to \a url.
+     * \see tabUrl()
+     * \since 17.08
+     */
+    void setTabUrl(int index, const QUrl &url);
+
+    /**
+     * Returns the text of the tab with ID \a id. If the button id does not
+     * exist \a QString() is returned.
+     * \see setTabUrl()
+     * \since 17.08
+     */
+    QUrl tabUrl(int index) const;
+
+    /**
      * Sets the icon of the tab with ID \a id to \a icon.
      * \see tabIcon()
      */
diff --git a/kate/katetabbar.cpp b/kate/katetabbar.cpp
--- a/kate/katetabbar.cpp
+++ b/kate/katetabbar.cpp
@@ -345,6 +345,25 @@
     return QString();
 }
 
+void KateTabBar::setTabUrl(int id, const QUrl &url)
+{
+    Q_ASSERT(d->idToTab.contains(id));
+    KateTabButton * tabButton = d->idToTab.value(id, nullptr);
+    if (tabButton) {
+        tabButton->setUrl(url);
+    }
+}
+
+QUrl KateTabBar::tabUrl(int id) const
+{
+    Q_ASSERT(d->idToTab.contains(id));
+    KateTabButton * tabButton = d->idToTab.value(id, nullptr);
+    if (tabButton) {
+        return tabButton->url();
+    }
+    return QUrl();
+}
+
 void KateTabBar::setTabIcon(int id, const QIcon &icon)
 {
     Q_ASSERT(d->idToTab.contains(id));
diff --git a/kate/katetabbutton.h b/kate/katetabbutton.h
--- a/kate/katetabbutton.h
+++ b/kate/katetabbutton.h
@@ -22,6 +22,7 @@
 #define KATE_TAB_BUTTON
 
 #include <QAbstractButton>
+#include <QUrl>
 
 class QPropertyAnimation;
 
@@ -71,6 +72,18 @@
      */
     bool geometryAnimationRunning() const;
 
+    /**
+     * The URL of the document this tab represents.
+     * \since 17.08
+     */
+    QUrl url() const;
+
+    /**
+     * Sets the URL of the document this tab represents.
+     * \since 17.08
+     */
+    void setUrl(const QUrl &url);
+
 public Q_SLOTS:
     /**
      * Animate the button's geometry from @p startGeom to @p endGeom
@@ -115,6 +128,7 @@
     TabCloseButton * m_closeButton;
     QPropertyAnimation * m_geometryAnimation;
     QPoint m_mouseDownPosition;
+    QUrl m_url;
 };
 
 #endif
diff --git a/kate/katetabbutton.cpp b/kate/katetabbutton.cpp
--- a/kate/katetabbutton.cpp
+++ b/kate/katetabbutton.cpp
@@ -202,6 +202,7 @@
     {
         QMimeData *mimeData = new QMimeData;
         mimeData->setData(QStringLiteral("application/x-dndkatetabbutton"), QByteArray());
+        mimeData->setUrls({m_url});
 
         auto drag = new QDrag(this);
         drag->setMimeData(mimeData);
@@ -290,3 +291,13 @@
     return m_geometryAnimation
         && (m_geometryAnimation->state() != QAbstractAnimation::Stopped);
 }
+
+QUrl KateTabButton::url() const
+{
+    return m_url;
+}
+
+void KateTabButton::setUrl(const QUrl &url)
+{
+    m_url = url;
+}
diff --git a/kate/kateviewspace.h b/kate/kateviewspace.h
--- a/kate/kateviewspace.h
+++ b/kate/kateviewspace.h
@@ -107,6 +107,7 @@
 public Q_SLOTS:
     void documentDestroyed(QObject *doc);
     void updateDocumentName(KTextEditor::Document *doc);
+    void updateDocumentUrl(KTextEditor::Document *doc);
     void updateDocumentState(KTextEditor::Document *doc);
 
 private Q_SLOTS:
diff --git a/kate/kateviewspace.cpp b/kate/kateviewspace.cpp
--- a/kate/kateviewspace.cpp
+++ b/kate/kateviewspace.cpp
@@ -359,6 +359,8 @@
 
     connect(doc, SIGNAL(documentNameChanged(KTextEditor::Document*)),
             this, SLOT(updateDocumentName(KTextEditor::Document*)));
+    connect(doc, &KTextEditor::Document::documentUrlChanged,
+            this, &KateViewSpace::updateDocumentUrl);
     connect(doc, SIGNAL(modifiedChanged(KTextEditor::Document*)),
             this, SLOT(updateDocumentState(KTextEditor::Document*)));
 }
@@ -380,6 +382,8 @@
     if (!documentDestroyed) {
         disconnect(doc, SIGNAL(documentNameChanged(KTextEditor::Document*)),
                this, SLOT(updateDocumentName(KTextEditor::Document*)));
+        disconnect(doc, &KTextEditor::Document::documentUrlChanged,
+                this, &KateViewSpace::updateDocumentUrl);
         disconnect(doc, SIGNAL(modifiedChanged(KTextEditor::Document*)),
               this, SLOT(updateDocumentState(KTextEditor::Document*)));
     }
@@ -498,6 +502,13 @@
     m_tabBar->setTabToolTip(buttonId, doc->url().toDisplayString());
 }
 
+void KateViewSpace::updateDocumentUrl(KTextEditor::Document *doc)
+{
+    const int buttonId = m_docToTabId[doc];
+    Q_ASSERT(buttonId >= 0);
+    m_tabBar->setTabUrl(buttonId, doc->url());
+}
+
 void KateViewSpace::updateDocumentState(KTextEditor::Document *doc)
 {
     QIcon icon;