diff --git a/HISTORY.md b/HISTORY.md
index 84f6beaa..07c052d8 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -100,6 +100,13 @@
 * **Notable Fixes:**
     * fixed occasional invisible error messages
 
+### 2021-07-02
+* extensions: took out web-serial extension prims (not yet ready)
+
+### 2021-06-25
+* extensions: added first rough experimental version of web-serial extension primitives
+* extensions: commented out web-serial extension prims while thinking about their design
+
 ### 2021-06-24
 * extensions: tweaked loading unlisted script-extensions
 * byob, threads, store: removed unused code
diff --git a/snap.html b/snap.html
index 278b559f..d21c0518 100755
--- a/snap.html
+++ b/snap.html
@@ -20,7 +20,7 @@
         <script src="src/sketch.js?version=2021-03-17"></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=2021-06-24"></script>
+        <script src="src/extensions.js?version=2021-07-02"></script>
         <script src="src/xml.js?version=2020-04-27"></script>
         <script src="src/store.js?version=2021-06-24"></script>
         <script src="src/locale.js?version=2021-06-11"></script>
diff --git a/src/extensions.js b/src/extensions.js
index 0ffbee87..99f3d067 100644
--- a/src/extensions.js
+++ b/src/extensions.js
@@ -31,7 +31,7 @@
 IDE_Morph, CamSnapshotDialogMorph, SoundRecorderDialogMorph, isSnapObject, nop,
 Color, Process, contains*/
 
-modules.extensions = '2021-June-24';
+modules.extensions = '2021-July-02';
 
 // Global stuff