diff --git a/demo/app/src/utils/java/com/chaquo/python/utils/App.java b/demo/app/src/utils/java/com/chaquo/python/utils/App.java
index afa1a98f3b..94fdd15417 100644
--- a/demo/app/src/utils/java/com/chaquo/python/utils/App.java
+++ b/demo/app/src/utils/java/com/chaquo/python/utils/App.java
@@ -3,6 +3,7 @@
 import android.app.*;
 import android.content.*;
 
+import androidx.appcompat.app.*;
 import androidx.preference.*;
 
 import com.chaquo.python.*;
@@ -28,4 +29,10 @@ public void onCreate() {
         Python.start(platform);
     }
 
+    public static void setPySubtitle(AppCompatActivity activity) {
+        PyObject platform = Python.getInstance().getModule("platform");
+        activity.getSupportActionBar().setSubtitle(
+            "Python " + platform.callAttr("python_version").toString());
+    }
+
 }
\ No newline at end of file
diff --git a/demo/app/src/utils/java/com/chaquo/python/utils/ConsoleActivity.java b/demo/app/src/utils/java/com/chaquo/python/utils/ConsoleActivity.java
index 1e923296be..766109fb9e 100644
--- a/demo/app/src/utils/java/com/chaquo/python/utils/ConsoleActivity.java
+++ b/demo/app/src/utils/java/com/chaquo/python/utils/ConsoleActivity.java
@@ -49,6 +49,8 @@ public static class ConsoleModel extends ViewModel {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        App.setPySubtitle(this);
+
         consoleModel = ViewModelProviders.of(this).get(ConsoleModel.class);
         task = ViewModelProviders.of(this).get(getTaskClass());
         setContentView(resId("layout", "activity_console"));
diff --git a/demo/app/src/utils/java/com/chaquo/python/utils/MainActivity.java b/demo/app/src/utils/java/com/chaquo/python/utils/MainActivity.java
index d47d76299b..9ad12932ad 100644
--- a/demo/app/src/utils/java/com/chaquo/python/utils/MainActivity.java
+++ b/demo/app/src/utils/java/com/chaquo/python/utils/MainActivity.java
@@ -16,6 +16,7 @@ protected void onCreate(Bundle savedInstanceState) {
             String version = getPackageManager().getPackageInfo(getPackageName(), 0).versionName;
             setTitle(getTitle() + " " + version);
         } catch (PackageManager.NameNotFoundException ignored) {}
+        App.setPySubtitle(this);
 
         setContentView(resId("layout", "activity_menu"));
         ((TextView)findViewById(resId("id", "tvCaption")))