diff --git a/History.md b/History.md
index 0b13d69c97..633a01a398 100644
--- a/History.md
+++ b/History.md
@@ -3,6 +3,10 @@
 * Rename `{{> UI.dynamic}}` to `{{> Template.dynamic}}`, and likewise
   with `UI.contentBlock` and `UI.elseBlock`.
 
+* Deprecate the `Template.someTemplate.myHelper = ...` syntax in favor
+  of `Template.someTemplate.helpers(...)`.  Using the older syntax still
+  works, but it prints a deprecation warning to the console.
+
 ## v0.9.2.2
 
 * Fix regression in 0.9.2 that prevented some users from accessing the