diff --git a/HISTORY.md b/HISTORY.md
index 39464c25..d71f8bee 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -86,6 +86,9 @@
     * German
     * French
 
+### 2019-06-04
+* Objects, Lists: fixed #682
+
 ### 2019-06-03
 * Threads: fixed #2249, predicates inside generic WHEN hats should be able to pass upvars
 * Blocks: fixed #1740
diff --git a/snap.html b/snap.html
index 1fd74d92..ce853863 100755
--- a/snap.html
+++ b/snap.html
@@ -8,10 +8,10 @@
         <script type="text/javascript" src="src/widgets.js?version=2019-04-05"></script>
         <script type="text/javascript" src="src/blocks.js?version=2019-06-03_1"></script>
         <script type="text/javascript" src="src/threads.js?version=2019-06-03"></script>
-        <script type="text/javascript" src="src/objects.js?version=2019-06-02"></script>
+        <script type="text/javascript" src="src/objects.js?version=2019-06-04"></script>
         <script type="text/javascript" src="src/gui.js?version=2019-05-29"></script>
         <script type="text/javascript" src="src/paint.js?version=2019-02-22"></script>
-        <script type="text/javascript" src="src/lists.js?version=2019-04-27"></script>
+        <script type="text/javascript" src="src/lists.js?version=2019-06-04"></script>
         <script type="text/javascript" src="src/byob.js?version=2019-02-15"></script>
         <script type="text/javascript" src="src/tables.js?version=2019-02-07"></script>
         <script type="text/javascript" src="src/symbols.js?version=2019-03-07"></script>
diff --git a/src/lists.js b/src/lists.js
index 73e685c4..8cfdaaa6 100644
--- a/src/lists.js
+++ b/src/lists.js
@@ -60,9 +60,9 @@
 Color, Point, WatcherMorph, StringMorph, SpriteMorph, ScrollFrameMorph,
 CellMorph, ArrowMorph, MenuMorph, snapEquals, Morph, isNil, localize, isString,
 MorphicPreferences, TableDialogMorph, SpriteBubbleMorph, SpeechBubbleMorph,
-TableFrameMorph, TableMorph, Variable, isSnapObject*/
+TableFrameMorph, TableMorph, Variable, isSnapObject, Costume*/
 
-modules.lists = '2019-April-27';
+modules.lists = '2019-June-04';
 
 var List;
 var ListWatcherMorph;
@@ -677,12 +677,12 @@ ListWatcherMorph.prototype.init = function (list, parentCell) {
 ListWatcherMorph.prototype.update = function (anyway) {
     var i, idx, ceil, morphs, cell, cnts, label, button, max,
         starttime, maxtime = 1000;
-
     this.frame.contents.children.forEach(function (m) {
         if (m instanceof CellMorph) {
             if (m.contentsMorph instanceof ListWatcherMorph) {
                 m.contentsMorph.update();
-            } else if (isSnapObject(m.contents)) {
+            } else if (isSnapObject(m.contents) ||
+                    (m.contents instanceof Costume)) {
                 m.update();
             }
         }
diff --git a/src/objects.js b/src/objects.js
index 7fb8fa36..4c1091ef 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -84,7 +84,7 @@ BlockEditorMorph, BlockDialogMorph, PrototypeHatBlockMorph, localize,
 TableMorph, TableFrameMorph, normalizeCanvas, BooleanSlotMorph, HandleMorph,
 AlignmentMorph, Process, XML_Element, VectorPaintEditorMorph, WorldMap*/
 
-modules.objects = '2019-June-02';
+modules.objects = '2019-June-04';
 
 var SpriteMorph;
 var StageMorph;
@@ -10381,11 +10381,12 @@ CellMorph.prototype.fixLayout = function () {
 
 CellMorph.prototype.update = function () {
     // special case for observing sprites
-    if (!isSnapObject(this.contents)) {
+    if (!isSnapObject(this.contents) && !(this.contents instanceof Costume)) {
         return;
     }
     if (this.version !== this.contents.version) {
         this.drawNew();
+        this.version = this.contents.version;
     }
 };
 
@@ -10836,7 +10837,8 @@ WatcherMorph.prototype.update = function () {
             }
         }
         if (newValue !== this.currentValue ||
-                isInherited !== this.isGhosted) {
+                isInherited !== this.isGhosted ||
+                (newValue.version && (newValue.version !== this.version))) {
             this.changed();
             this.cellMorph.contents = newValue;
             this.isGhosted = isInherited;
@@ -10853,6 +10855,11 @@ WatcherMorph.prototype.update = function () {
                 this.sliderMorph.drawNew();
             }
             this.fixLayout();
+            if (this.currentValue && this.currentValue.version) {
+                this.version = this.currentValue.version;
+            } else {
+                this.version = Date.now();
+            }
             this.currentValue = newValue;
         }
     }