diff --git a/www/content/extensions/idiomorph.md b/www/content/extensions/idiomorph.md
index a1f12d038..ea49ff932 100644
--- a/www/content/extensions/idiomorph.md
+++ b/www/content/extensions/idiomorph.md
@@ -45,6 +45,8 @@ import `htmx.org`;
 import `idiomorph/htmx`;
 ```
 
+_Note: when used with the [SSE extension](@/extensions/sse.md), requires htmx-ext-sse 2.2.4+ ([#164](https://github.com/bigskysoftware/htmx-extensions/issues/164))._
+
 ## Usage
 
 Once you have referenced the idiomorph extension, you can register it with the name `morph` on the body and then begin
diff --git a/www/content/extensions/sse.md b/www/content/extensions/sse.md
index 5e5f40628..5fad8a436 100644
--- a/www/content/extensions/sse.md
+++ b/www/content/extensions/sse.md
@@ -52,6 +52,8 @@ import `htmx.org`;
 import `htmx-ext-sse`; 
 ```
 
+_Note: when used with the [idiomorph extension](@/extensions/idiomorph.md), requires htmx-ext-sse 2.2.4+ ([#164](https://github.com/bigskysoftware/htmx-extensions/issues/164))._
+
 ## Usage
 
 ```html