diff --git a/src/frontends/qt/GuiAbout.cpp b/src/frontends/qt/GuiAbout.cpp
index 5ad435952d..a62ade781e 100644
--- a/src/frontends/qt/GuiAbout.cpp
+++ b/src/frontends/qt/GuiAbout.cpp
@@ -244,6 +244,12 @@ static QString dirUser()
 }
 
 
+static QString dirTemp()
+{
+	return toqstr(makeDisplayPath(package().temp_dir().absFileName()));
+}
+
+
 static QString version(bool const plain = false)
 {
 	QString loc_release_date;
@@ -326,6 +332,12 @@ void GuiAbout::on_showDirUserPB_clicked()
 }
 
 
+void GuiAbout::on_showDirTempPB_clicked()
+{
+	showDirectory(package().temp_dir());
+}
+
+
 void GuiAbout::on_versionCopyPB_clicked()
 {
 	qApp->clipboard()->setText(version(true));
@@ -355,6 +367,8 @@ GuiAbout::GuiAbout(GuiView & lv)
 	d->ui.iconSW->setFixedSize(iconsize, iconsize);
 	d->ui.dirLibraryLA->setText(dirLibrary());
 	d->ui.dirLibraryLA->adjustSize();
+	d->ui.dirTempLA->setText(dirTemp());
+	d->ui.dirTempLA->adjustSize();
 	d->ui.dirUserLA->setText(dirUser());
 	d->ui.dirUserLA->adjustSize();
 	d->ui.buildinfoTB->setText(buildinfo());
diff --git a/src/frontends/qt/GuiAbout.h b/src/frontends/qt/GuiAbout.h
index c9b2443689..3ca191d3c7 100644
--- a/src/frontends/qt/GuiAbout.h
+++ b/src/frontends/qt/GuiAbout.h
@@ -30,6 +30,7 @@ private Q_SLOTS:
 	void on_buttonBox_rejected();
 	void on_showDirLibraryPB_clicked();
 	void on_showDirUserPB_clicked();
+	void on_showDirTempPB_clicked();
 	void on_versionCopyPB_clicked();
 
 private:
diff --git a/src/frontends/qt/ui/AboutUi.ui b/src/frontends/qt/ui/AboutUi.ui
index 4a6adac566..5a03c23180 100644
--- a/src/frontends/qt/ui/AboutUi.ui
+++ b/src/frontends/qt/ui/AboutUi.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>552</width>
-    <height>470</height>
+    <height>504</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -30,7 +30,7 @@
        <item row="0" column="0">
         <layout class="QVBoxLayout" name="verticalLayout">
          <property name="sizeConstraint">
-          <enum>QLayout::SetFixedSize</enum>
+          <enum>QLayout::SizeConstraint::SetFixedSize</enum>
          </property>
          <item>
           <widget class="QSvgWidget" name="iconSW" native="true">
@@ -45,7 +45,7 @@
          <item>
           <spacer name="verticalSpacer_2">
            <property name="orientation">
-            <enum>Qt::Vertical</enum>
+            <enum>Qt::Orientation::Vertical</enum>
            </property>
            <property name="sizeHint" stdset="0">
             <size>
@@ -60,10 +60,10 @@
        <item row="0" column="1">
         <spacer name="horizontalSpacer_2">
          <property name="orientation">
-          <enum>Qt::Horizontal</enum>
+          <enum>Qt::Orientation::Horizontal</enum>
          </property>
          <property name="sizeType">
-          <enum>QSizePolicy::Fixed</enum>
+          <enum>QSizePolicy::Policy::Fixed</enum>
          </property>
          <property name="sizeHint" stdset="0">
           <size>
@@ -78,10 +78,10 @@
          <item>
           <spacer name="verticalSpacer_3">
            <property name="orientation">
-            <enum>Qt::Vertical</enum>
+            <enum>Qt::Orientation::Vertical</enum>
            </property>
            <property name="sizeType">
-            <enum>QSizePolicy::Fixed</enum>
+            <enum>QSizePolicy::Policy::Fixed</enum>
            </property>
            <property name="sizeHint" stdset="0">
             <size>
@@ -106,7 +106,7 @@
             <string notr="true">&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;LyX version info goes here.&lt;/span&gt;&lt;/p&gt;&lt;p&gt;Qt version (run-time) goes here.&lt;/p&gt;&lt;p&gt;Qt version (compile-time) goes here.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
            </property>
            <property name="alignment">
-            <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+            <set>Qt::AlignmentFlag::AlignLeading|Qt::AlignmentFlag::AlignLeft|Qt::AlignmentFlag::AlignVCenter</set>
            </property>
            <property name="wordWrap">
             <bool>true</bool>
@@ -115,17 +115,17 @@
             <number>0</number>
            </property>
            <property name="textInteractionFlags">
-            <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByMouse</set>
+            <set>Qt::TextInteractionFlag::LinksAccessibleByMouse|Qt::TextInteractionFlag::TextSelectableByMouse</set>
            </property>
           </widget>
          </item>
          <item>
           <spacer name="verticalSpacer">
            <property name="orientation">
-            <enum>Qt::Vertical</enum>
+            <enum>Qt::Orientation::Vertical</enum>
            </property>
            <property name="sizeType">
-            <enum>QSizePolicy::MinimumExpanding</enum>
+            <enum>QSizePolicy::Policy::MinimumExpanding</enum>
            </property>
            <property name="sizeHint" stdset="0">
             <size>
@@ -172,13 +172,13 @@
                <string notr="true">System directory goes here.</string>
               </property>
               <property name="textFormat">
-               <enum>Qt::PlainText</enum>
+               <enum>Qt::TextFormat::PlainText</enum>
               </property>
               <property name="wordWrap">
                <bool>false</bool>
               </property>
               <property name="textInteractionFlags">
-               <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByMouse</set>
+               <set>Qt::TextInteractionFlag::LinksAccessibleByMouse|Qt::TextInteractionFlag::TextSelectableByMouse</set>
               </property>
              </widget>
             </item>
@@ -200,13 +200,13 @@
                <string notr="true">User directory goes here.</string>
               </property>
               <property name="textFormat">
-               <enum>Qt::PlainText</enum>
+               <enum>Qt::TextFormat::PlainText</enum>
               </property>
               <property name="wordWrap">
                <bool>false</bool>
               </property>
               <property name="textInteractionFlags">
-               <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByMouse</set>
+               <set>Qt::TextInteractionFlag::LinksAccessibleByMouse|Qt::TextInteractionFlag::TextSelectableByMouse</set>
               </property>
              </widget>
             </item>
@@ -232,6 +232,53 @@
            </layout>
           </widget>
          </item>
+         <item>
+          <widget class="QGroupBox" name="gridGroupBox2">
+           <property name="title">
+            <string>Temporary directory</string>
+           </property>
+           <layout class="QGridLayout" name="gridLayout_9">
+            <item row="0" column="0">
+             <widget class="QLabel" name="dirTempLA">
+              <property name="cursor">
+               <cursorShape>IBeamCursor</cursorShape>
+              </property>
+              <property name="text">
+               <string notr="true">Temp directory goes here.</string>
+              </property>
+              <property name="textFormat">
+               <enum>Qt::TextFormat::PlainText</enum>
+              </property>
+              <property name="wordWrap">
+               <bool>false</bool>
+              </property>
+              <property name="textInteractionFlags">
+               <set>Qt::TextInteractionFlag::LinksAccessibleByMouse|Qt::TextInteractionFlag::TextSelectableByMouse</set>
+              </property>
+             </widget>
+            </item>
+            <item row="0" column="1">
+             <widget class="QPushButton" name="showDirTempPB">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+              <property name="toolTip">
+               <string>Open temporary directory in file browser</string>
+              </property>
+              <property name="text">
+               <string>[[do]]O&amp;pen</string>
+              </property>
+              <property name="flat">
+               <bool>false</bool>
+              </property>
+             </widget>
+            </item>
+           </layout>
+          </widget>
+         </item>
         </layout>
        </item>
       </layout>
@@ -368,7 +415,7 @@
      <item>
       <widget class="QDialogButtonBox" name="buttonBox">
        <property name="standardButtons">
-        <set>QDialogButtonBox::Close</set>
+        <set>QDialogButtonBox::StandardButton::Close</set>
        </property>
       </widget>
      </item>