diff --git a/docs/conf.py b/docs/conf.py
index 2e250c8..dff1a2e 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -48,9 +48,9 @@ copyright = u'2014, Thomas Perl'
 # built documents.
 #
 # The short X.Y version.
-version = '1.3'
+version = '1.4'
 # The full version, including alpha/beta/rc tags.
-release = '1.3.0'
+release = '1.4.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/docs/index.rst b/docs/index.rst
index a915748..dd90c5f 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -28,7 +28,7 @@ This section describes the QML API exposed by the *PyOtherSide* QML Plugin.
 Import Versions
 ---------------
 
-The current QML API version of PyOtherSide is 1.3. When new features are
+The current QML API version of PyOtherSide is 1.4. When new features are
 introduced, or behavior is changed, the API version will be bumped and
 documented here.
 
@@ -67,7 +67,7 @@ To use the ``Python`` element in a QML file, you have to import the plugin using
 
 .. code-block:: javascript
 
-    import io.thp.pyotherside 1.3
+    import io.thp.pyotherside 1.4
 
 Signals
 ```````
@@ -150,12 +150,16 @@ imported modules using:
     If a JavaScript exception occurs in the callback, the :func:`error`
     signal is emitted with ``traceback`` containing the exception info.
 
+.. versionadded:: 1.4.0
+
 Attributes on Python objects can be accessed using :func:`getattr`:
 
 .. function:: getattr(obj, string attr) -> var
 
     Get the attribute ``attr`` of the Python object ``obj``.
 
+.. versionadded:: 1.4.0
+
 For some of these methods, there also exist synchronous variants, but it is
 highly recommended to use the asynchronous variants instead to avoid blocking
 the QML UI thread:
@@ -176,6 +180,8 @@ the QML UI thread:
 
     Call a Python method. Returns the return value of the Python method.
 
+.. versionadded:: 1.4.0
+
 The following functions allow access to the version of the running PyOtherSide
 plugin and Python interpreter.
 
@@ -355,6 +361,8 @@ between Python and QML (and vice versa):
 +--------------------+------------+-----------------------------+
 | iterable           | JS Array   | since PyOtherSide 1.3.0     |
 +--------------------+------------+-----------------------------+
+| object             | (opaque)   | since PyOtherSide 1.4.0     |
++--------------------+------------+-----------------------------+
 
 Trying to pass in other types than the ones listed here is undefined
 behavior and will usually result in an error.
@@ -679,7 +687,7 @@ Using this function from QML is straightforward:
 .. code-block:: javascript
 
     import QtQuick 2.0
-    import io.thp.pyotherside 1.3
+    import io.thp.pyotherside 1.4
 
     Rectangle {
         color: 'black'
@@ -775,7 +783,7 @@ This module can now be imported in QML and used as ``source`` in the QML
 .. code-block:: javascript
 
     import QtQuick 2.0
-    import io.thp.pyotherside 1.3
+    import io.thp.pyotherside 1.4
 
     Image {
         id: image
@@ -918,6 +926,12 @@ Known Problems:
 ChangeLog
 =========
 
+Version 1.4.0 (UNRELEASED)
+--------------------------
+
+* Support for passing Python objects to QML and keeping references there
+* Add :func:`callMethod`, :func:`callMethod_sync` and :func:`getattr`
+
 Version 1.3.0 (2014-07-24)
 --------------------------
 
diff --git a/examples/helloworld.qml b/examples/helloworld.qml
index 187833c..03c5627 100644
--- a/examples/helloworld.qml
+++ b/examples/helloworld.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import io.thp.pyotherside 1.0
+import io.thp.pyotherside 1.4
 
 Rectangle {
     width: 200
diff --git a/pyotherside.pri b/pyotherside.pri
index 5fdc4e3..338a554 100644
--- a/pyotherside.pri
+++ b/pyotherside.pri
@@ -1,2 +1,2 @@
 PROJECTNAME = pyotherside
-VERSION = 1.3.0
+VERSION = 1.4.0
diff --git a/src/pyotherside_plugin.cpp b/src/pyotherside_plugin.cpp
index 33afc4e..0ea9537 100644
--- a/src/pyotherside_plugin.cpp
+++ b/src/pyotherside_plugin.cpp
@@ -61,4 +61,5 @@ PyOtherSideExtensionPlugin::registerTypes(const char *uri)
     // There is no PyOtherSide 1.1 import, as it's the same as 1.0
     qmlRegisterType<QPython12>(uri, 1, 2, PYOTHERSIDE_QPYTHON_NAME);
     qmlRegisterType<QPython13>(uri, 1, 3, PYOTHERSIDE_QPYTHON_NAME);
+    qmlRegisterType<QPython14>(uri, 1, 4, PYOTHERSIDE_QPYTHON_NAME);
 }
diff --git a/src/qpython.cpp b/src/qpython.cpp
index 3989ff8..17b8c60 100644
--- a/src/qpython.cpp
+++ b/src/qpython.cpp
@@ -257,6 +257,11 @@ QPython::call_sync(QString func, QVariant args)
 void
 QPython::callMethod(QVariant obj, QString method, QVariant args, QJSValue callback)
 {
+    if (!SINCE_API_VERSION(1, 4)) {
+        emit error(QString("Import PyOtherSide 1.4 or newer to use callMethod()"));
+        return;
+    }
+
     QJSValue *cb = 0;
     if (!callback.isNull() && !callback.isUndefined() && callback.isCallable()) {
         cb = new QJSValue(callback);
@@ -267,6 +272,11 @@ QPython::callMethod(QVariant obj, QString method, QVariant args, QJSValue callba
 QVariant
 QPython::callMethod_sync(QVariant obj, QString method, QVariant args)
 {
+    if (!SINCE_API_VERSION(1, 4)) {
+        emit error(QString("Import PyOtherSide 1.4 or newer to use callMethod_sync()"));
+        return QVariant();
+    }
+
     ENSURE_GIL_STATE;
 
     PyObject *pyobj = convertQVariantToPyObject(obj);
@@ -299,6 +309,11 @@ QPython::callMethod_sync(QVariant obj, QString method, QVariant args)
 
 QVariant
 QPython::getattr(QVariant obj, QString attr) {
+    if (!SINCE_API_VERSION(1, 4)) {
+        emit error(QString("Import PyOtherSide 1.4 or newer to use getattr()"));
+        return QVariant();
+    }
+
     ENSURE_GIL_STATE;
 
     PyObject *pyobj = convertQVariantToPyObject(obj);
diff --git a/src/qpython.h b/src/qpython.h
index 190e3ce..b25148d 100644
--- a/src/qpython.h
+++ b/src/qpython.h
@@ -418,4 +418,13 @@ public:
     }
 };
 
+class QPython14 : public QPython {
+Q_OBJECT
+public:
+    QPython14(QObject *parent=0)
+        : QPython(parent, 1, 4)
+    {
+    }
+};
+
 #endif /* PYOTHERSIDE_QPYTHON_H */
diff --git a/tests/test_added_in_14/test_added_in_14.qml b/tests/test_added_in_14/test_added_in_14.qml
new file mode 100644
index 0000000..463a069
--- /dev/null
+++ b/tests/test_added_in_14/test_added_in_14.qml
@@ -0,0 +1,24 @@
+import QtQuick 2.0
+// Note that we import 1.3 here instead of >= 1.4
+import io.thp.pyotherside 1.3
+
+Python {
+    Component.onCompleted: {
+        var foo = undefined;
+
+        // qml: Received error: Import PyOtherSide 1.4 or newer to use getattr()
+        getattr(foo, 'test');
+
+        // qml: Received error: Import PyOtherSide 1.4 or newer to use callMethod()
+        callMethod(foo, 'something', [], function (result) {});
+
+        // qml: Received error: Import PyOtherSide 1.4 or newer to use callMethod_sync()
+        var result = callMethod_sync(foo, 'something', []);
+
+        Qt.quit();
+    }
+
+    onError: {
+        console.log('Received error: ' + traceback);
+    }
+}