diff --git a/HISTORY.md b/HISTORY.md
index ca0d5b6a..3ea951a4 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -55,6 +55,9 @@
     * Chinese, thanks, Simon!
     * Brazilian Portuguese, thank you, Cassiano D'Andrea!
 
+### 2021-11-12
+* store: fixed importing custom categories from libraries, thanks, Eckart, for reporting this!
+
 ### 2021-11-11
 * German translation update, changed %hsva -> %clrdim
 * Brazilian Portuguese translation update, thank you, Cassiano D'Andrea!!
diff --git a/snap.html b/snap.html
index 861db2db..d14289bd 100755
--- a/snap.html
+++ b/snap.html
@@ -30,7 +30,7 @@
         <script src="src/maps.js?version=2021-06-15"></script>
         <script src="src/extensions.js?version=2021-11-08"></script>
         <script src="src/xml.js?version=2021-07-05"></script>
-        <script src="src/store.js?version=2021-11-11"></script>
+        <script src="src/store.js?version=2021-11-12"></script>
         <script src="src/locale.js?version=2021-11-11"></script>
         <script src="src/cloud.js?version=2021-02-04"></script>
         <script src="src/api.js?version=2021-07-05"></script>
diff --git a/src/store.js b/src/store.js
index b03fcb77..f1803ef7 100644
--- a/src/store.js
+++ b/src/store.js
@@ -63,7 +63,7 @@ Project*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.store = '2021-November-11';
+modules.store = '2021-November-12';
 
 // XML_Serializer ///////////////////////////////////////////////////////
 /*
@@ -675,8 +675,8 @@ SnapSerializer.prototype.loadBlocks = function (xmlString, targetStage) {
     }
     model.palette = model.childNamed('palette');
     if (model.palette) {
-        SpriteMorph.prototype.customCategories = this.loadPalette(
-            model.palette
+        this.loadPalette(model.palette).forEach((value, key) =>
+            SpriteMorph.prototype.customCategories.set(key, value)
         );
     }
     model.removeChild(model.palette);