diff --git a/docs/releasenotes/10.1.0.rst b/docs/releasenotes/10.1.0.rst
index 31b3e57ec74..937fc133294 100644
--- a/docs/releasenotes/10.1.0.rst
+++ b/docs/releasenotes/10.1.0.rst
@@ -35,6 +35,17 @@ as a tuple. ::
     im.getpixel((0, 0))
     im.getpixel([0, 0])
 
+BoxBlur and GaussianBlur allow for different x and y radii
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+py:meth:`~PIL.ImageFilter.BoxBlur` and py:meth:`~PIL.ImageFilter.GaussianBlur`
+now allow a sequence of x and y radii to be specified, rather than a single
+number for both dimensions. ::
+
+    from PIL import ImageFilter
+    ImageFilter.BoxBlur((2, 5))
+    ImageFilter.GaussianBlur((2, 5))
+
 API Additions
 =============