diff --git a/HISTORY.md b/HISTORY.md
index c6b74ab0..5daed770 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -5,6 +5,7 @@
 * **New Features:**
 * **Notable Changes:**
     * better support for multi-byte emojis with "split" and "unicode", thanks, Michael!
+    * added support for Uni Oxford (Ken Kahn's) ecraft2learn extension 
 * **Notable Fixes:**
     * keep the order of sprites in the corral when saving newly created projects
     * allow parens in project names (again)
@@ -13,6 +14,7 @@
 
 ### 2021-12-14
 * threads, lists: better support for multi-byte emojis with "split" and "unicode", thanks, Michael!
+* extensions: added support for Uni Oxford (Ken Kahn's) ecraft2learn extension 
 
 ### 2021-12-14
 * new dev version
diff --git a/snap.html b/snap.html
index 0515c760..e785399f 100755
--- a/snap.html
+++ b/snap.html
@@ -28,7 +28,7 @@
         <script src="src/sketch.js?version=2021-11-03"></script>
         <script src="src/video.js?version=2019-06-27"></script>
         <script src="src/maps.js?version=2021-06-15"></script>
-        <script src="src/extensions.js?version=2021-11-22"></script>
+        <script src="src/extensions.js?version=2021-12-15"></script>
         <script src="src/xml.js?version=2021-07-05"></script>
         <script src="src/store.js?version=2021-12-14"></script>
         <script src="src/locale.js?version=2021-12-10"></script>
diff --git a/src/extensions.js b/src/extensions.js
index 2f28c836..e6bc8876 100644
--- a/src/extensions.js
+++ b/src/extensions.js
@@ -33,7 +33,7 @@ Color, Process, contains*/
 
 /*jshint esversion: 11*/
 
-modules.extensions = '2021-November-22';
+modules.extensions = '2021-December-15';
 
 // Global stuff
 
@@ -41,9 +41,10 @@ var SnapExtensions = {
     primitives: new Map(),
     menus: new Map(),
     scripts: [],
-    urls: [
+    urls: [ // allow-list of trusted servers
         'libraries/',
-        'https://snap.berkeley.edu/'
+        'https://snap.berkeley.edu/',
+        'https://ecraft2learn.github.io/ai/' // Uni-Oxford, Ken Kahn
     ]
 };