diff --git a/HISTORY.md b/HISTORY.md
index 51ca3395..ae9eebfa 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -7,6 +7,7 @@
     * when constructing a costume from a pixel list handle single values as greyscale
     * experimental "column _ of _" reporter relabelling option for "item _ of _"
     * experimental "width of _" reporter relabelling option for "length of _"
+    * renamed "Obsolete!" blocks to "Undefined!"
 * **Notable Fixes:**
     * fixed a glitch in the animation library's "sine in-out" easing function 
     * fixed a postMessage glitch in the API, thanks, Bernat!
@@ -22,6 +23,7 @@
 * threads, objects experimental "width of _" reporter relabelling option for "length of _"
 * updated German translation (with experimental block specs)
 * fixed an input slot spec glitch in the Turkish translation 
+* store: renamed "Obsolete!" blocks to "Undefined!"
 
 ### 2021-01-25
 * threads: hyperized image attribute reporter primitive (monadic)
diff --git a/snap.html b/snap.html
index d4f5cedd..0589b633 100755
--- a/snap.html
+++ b/snap.html
@@ -20,7 +20,7 @@
         <script src="src/video.js?version=2019-06-27"></script>
         <script src="src/maps.js?version=2020-03-25"></script>
         <script src="src/xml.js?version=2020-04-27"></script>
-        <script src="src/store.js?version=2020-12-11"></script>
+        <script src="src/store.js?version=2021-01-26"></script>
         <script src="src/locale.js?version=2021-01-26"></script>
         <script src="src/cloud.js?version=2020-10-21"></script>
         <script src="src/api.js?version=2021-01-25"></script>
diff --git a/src/store.js b/src/store.js
index 2ce93df1..011ea1fc 100644
--- a/src/store.js
+++ b/src/store.js
@@ -7,7 +7,7 @@
     written by Jens Mönig
     jens@moenig.org
 
-    Copyright (C) 2019 by Jens Mönig
+    Copyright (C) 2021 by Jens Mönig
 
     This file is part of Snap!.
 
@@ -61,7 +61,7 @@ normalizeCanvas, contains*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.store = '2020-December-11';
+modules.store = '2021-January-26';
 
 
 // XML_Serializer ///////////////////////////////////////////////////////
@@ -1253,7 +1253,7 @@ SnapSerializer.prototype.obsoleteBlock = function (isReporter) {
             : new CommandBlockMorph();
     block.selector = 'errorObsolete';
     block.color = new Color(200, 0, 20);
-    block.setSpec('Obsolete!');
+    block.setSpec('Undefined!');
     block.isDraggable = true;
     return block;
 };