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diff --git a/examples/plotUpdateImageFromGevent.py b/examples/plotUpdateImageFromGevent.py
new file mode 100644
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+++ b/examples/plotUpdateImageFromGevent.py
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+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 2017-2022 European Synchrotron Radiation Facility
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+# ###########################################################################*/
+"""This script illustrates the update of a :class:`~silx.gui.plot.Plot2D`
+widget from a gevent coroutine.
+"""
+
+__authors__ = ["T. Vincent"]
+__license__ = "MIT"
+__date__ = "05/09/2017"
+
+
+import threading
+import time
+import gevent
+import logging
+
+import numpy
+
+from silx.gui import qt
+from silx.gui.utils import concurrent
+from silx.gui.plot import Plot2D
+
+_logger = logging.getLogger(__name__)
+
+Nx = 150
+Ny = 50
+
+
+def process_gevent():
+    """Process gevent in case of QTimer triggering it."""
+    try:
+        gevent.sleep(0.01)
+    except Exception:
+        _logger.critical("Uncaught exception from gevent", exc_info=True)
+
+
+def update_image(plot2d):
+    """Update the image of a :class:`~sil.gui.plot.Plot2D`
+
+    :param plot2d: The Plot2D to update."""
+
+    pos = {'x0': 0, 'y0': 0}
+    while True:
+        gevent.sleep(0.01)
+
+        # Create image
+        # width of peak
+        sigma_x = 0.15
+        sigma_y = 0.25
+        # x and y positions
+        x = numpy.linspace(-1.5, 1.5, Nx)
+        y = numpy.linspace(-1.0, 1.0, Ny)
+        xv, yv = numpy.meshgrid(x, y)
+        signal = numpy.exp(- ((xv - pos['x0']) ** 2 / sigma_x ** 2
+                                + (yv - pos['y0']) ** 2 / sigma_y ** 2))
+        # add noise
+        signal += 0.3 * numpy.random.random(size=signal.shape)
+        # random walk of center of peak ('drift')
+        pos['x0'] += 0.05 * (numpy.random.random() - 0.5)
+        pos['y0'] += 0.05 * (numpy.random.random() - 0.5)
+
+        plot2d.addImage(signal, resetzoom=False)
+
+
+def main():
+    global app
+    app = qt.QApplication([])
+
+    gevent_timer = qt.QTimer()
+    gevent_timer.start(10)
+    gevent_timer.timeout.connect(process_gevent)
+
+    # Create a Plot2D, set its limits and display it
+    plot2d = Plot2D()
+    plot2d.getIntensityHistogramAction().setVisible(True)
+    plot2d.setLimits(0, Nx, 0, Ny)
+    plot2d.getDefaultColormap().setVRange(0., 1.5)
+    plot2d.show()
+
+    # Create the thread that calls submitToQtMainThread
+    updater = gevent.spawn(update_image, plot2d)
+
+    app.exec()
+
+    updater.kill()  # Stop updating the plot
+    updater.join()
+
+
+if __name__ == '__main__':
+    main()