diff --git a/HISTORY.md b/HISTORY.md
index bd8c54d3..d4c234d4 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -39,6 +39,9 @@
     * German
     * Chinese, thanks, Simon!
 
+### 2021-10-11
+* objects: sort order of blocks in custom categories alphabetically in the unified palette
+
 ### 2021-10-08
 * objects: tweaked variable block visibility
 * objects: filter hidden blocks out from search / keyboard input results
diff --git a/snap.html b/snap.html
index 45d89803..2327d7c6 100755
--- a/snap.html
+++ b/snap.html
@@ -18,7 +18,7 @@
         <script src="src/widgets.js?version=2021-07-21"></script>
         <script src="src/blocks.js?version=2021-10-07"></script>
         <script src="src/threads.js?version=2021-10-06"></script>
-        <script src="src/objects.js?version=2021-10-08"></script>
+        <script src="src/objects.js?version=2021-10-11"></script>
         <script src="src/scenes.js?version=2021-07-21"></script>
         <script src="src/gui.js?version=2021-09-30"></script>
         <script src="src/paint.js?version=2021-07-05"></script>
diff --git a/src/objects.js b/src/objects.js
index 7207bea2..144a0552 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -87,7 +87,7 @@ BlockVisibilityDialogMorph*/
 
 /*jshint esversion: 6*/
 
-modules.objects = '2021-October-08';
+modules.objects = '2021-October-11';
 
 var SpriteMorph;
 var StageMorph;
@@ -166,7 +166,9 @@ SpriteMorph.prototype.blockColor = {
 SpriteMorph.prototype.customCategories = new Map(); // key: name, value: color
 
 SpriteMorph.prototype.allCategories = function () {
-    return this.categories.concat(Array.from(this.customCategories.keys()));
+    return this.categories.concat(
+        Array.from(this.customCategories.keys()).sort()
+    );
 };
 
 SpriteMorph.prototype.blockColorFor = function (category) {