diff --git a/icon.ico b/icon.ico
new file mode 100644
index 0000000..6c882ca
Binary files /dev/null and b/icon.ico differ
diff --git a/images/icon.png b/images/icon.png
new file mode 100644
index 0000000..0b80d08
Binary files /dev/null and b/images/icon.png differ
diff --git a/mainwindow.ui b/mainwindow.ui
index 6298ebb..ad47ba1 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -13,6 +13,10 @@
   <property name="windowTitle">
    <string>MainWindow</string>
   </property>
+  <property name="windowIcon">
+   <iconset resource="resources.qrc">
+    <normaloff>:/zeiterfassung/images/icon.png</normaloff>:/zeiterfassung/images/icon.png</iconset>
+  </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QVBoxLayout" name="verticalLayout" stretch="0,0">
     <item>
diff --git a/resources.qrc b/resources.qrc
index 967df7a..8b7c57e 100644
--- a/resources.qrc
+++ b/resources.qrc
@@ -7,5 +7,6 @@
         <file>images/quit.png</file>
         <file>images/refresh.png</file>
         <file>images/today.png</file>
+        <file>images/icon.png</file>
     </qresource>
 </RCC>
diff --git a/zeiterfassung.pro b/zeiterfassung.pro
index 89ba250..a6342a9 100755
--- a/zeiterfassung.pro
+++ b/zeiterfassung.pro
@@ -14,6 +14,8 @@ DEFINES += QT_DEPRECATED_WARNINGS
 # You can also select to disable deprecated APIs only up to a certain version of Qt.
 DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
 
+RC_ICONS = icon.ico
+
 SOURCES += main.cpp \
     zeiterfassung.cpp \
     mainwindow.cpp \