diff --git a/src/main/markdown/doc/latest/DevGuideIE9.md b/src/main/markdown/doc/latest/DevGuideIE9.md
index 3525c33c4..7efe3566c 100644
--- a/src/main/markdown/doc/latest/DevGuideIE9.md
+++ b/src/main/markdown/doc/latest/DevGuideIE9.md
@@ -1,6 +1,8 @@
 IE9
 ===
 
+**This document is deprecated: Starting with version 2.10.0, GWT no longer supports IE9!**
+
 ## Things to keep in mind<a id="Overview"></a>
 
 ### Modes