diff --git a/doc/source/api_changes.txt b/doc/source/api_changes.txt
index 0271bec0..8ebcc6ed 100644
--- a/doc/source/api_changes.txt
+++ b/doc/source/api_changes.txt
@@ -1,3 +1,8 @@
+Version 0.11
+------------
+- Some edge detectors returned values greater than 1--their results are now
+  appropriately scaled with a factor of ``sqrt(2)``.
+
 Version 0.10
 ------------
 - Removed ``skimage.io.video`` functionality due to broken gstreamer bindings