diff --git a/docs/deprecations.rst b/docs/deprecations.rst
index adbf0f85f..12367ce6e 100644
--- a/docs/deprecations.rst
+++ b/docs/deprecations.rst
@@ -12,6 +12,18 @@ Deprecated features
 Below are features which are considered deprecated. Where appropriate,
 a ``DeprecationWarning`` is issued.
 
+
+PyQt4 and PySide
+~~~~~~~~~~~~~~~~
+
+.. deprecated:: 6.0.0
+
+Qt 4 reached end-of-life on 2015-12-19. Its Python bindings are also EOL: PyQt4 since
+2018-08-31 and PySide since 2015-10-14.
+
+Support for PyQt4 and PySide has been deprecated from ``ImageQt`` and will be removed in
+a future version. Please upgrade to PyQt5 or PySide2.
+
 Setting the size of TIFF images
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
diff --git a/docs/reference/ImageQt.rst b/docs/reference/ImageQt.rst
index 386401075..5128f28fb 100644
--- a/docs/reference/ImageQt.rst
+++ b/docs/reference/ImageQt.rst
@@ -7,6 +7,12 @@
 The :py:mod:`ImageQt` module contains support for creating PyQt4, PyQt5, PySide or
 PySide2 QImage objects from PIL images.
 
+Qt 4 reached end-of-life on 2015-12-19. Its Python bindings are also EOL: PyQt4 since
+2018-08-31 and PySide since 2015-10-14.
+
+Support for PyQt4 and PySide is deprecated since Pillow 6.0.0 and will be removed in a
+future version. Please upgrade to PyQt5 or PySide2.
+
 .. versionadded:: 1.1.6
 
 .. py:class:: ImageQt.ImageQt(image)
diff --git a/docs/releasenotes/6.0.0.rst b/docs/releasenotes/6.0.0.rst
index e1fa83cce..9fbb3d69a 100644
--- a/docs/releasenotes/6.0.0.rst
+++ b/docs/releasenotes/6.0.0.rst
@@ -32,6 +32,18 @@ API Changes
 Deprecations
 ^^^^^^^^^^^^
 
+PyQt4 and PySide
+~~~~~~~~~~~~~~~~
+
+Qt 4 reached end-of-life on 2015-12-19. Its Python bindings are also EOL: PyQt4 since
+2018-08-31 and PySide since 2015-10-14.
+
+Support for PyQt4 and PySide has been deprecated from ``ImageQt`` and will be removed in
+a future version. Please upgrade to PyQt5 or PySide2.
+
+PIL.*ImagePlugin.__version__ attributes
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
 These version constants have been deprecated and will be removed in a future
 version.