diff --git a/HISTORY.md b/HISTORY.md
index b62b5afd56..81bb83ae3e 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -12,6 +12,7 @@
 * lists: fixed a RESHAPE edge case when passing in a single zero dimension
 * lists: made sure ITEM OF returns data matching the shape specified by the query struct
 * lists: hyperized ITEM OF
+* threads: refactored reportRank()
 
 ## 9.1.1:
 * **Notable Fixes:**
diff --git a/snap.html b/snap.html
index 8c0b37d518..d5a86b74ac 100755
--- a/snap.html
+++ b/snap.html
@@ -17,7 +17,7 @@
         <script src="src/symbols.js?version=2023-07-13"></script>
         <script src="src/widgets.js?version=2023-05-24"></script>
         <script src="src/blocks.js?version=2023-11-24"></script>
-        <script src="src/threads.js?version=2023-10-29"></script>
+        <script src="src/threads.js?version=2024-01-03"></script>
         <script src="src/objects.js?version=2023-11-30"></script>
         <script src="src/scenes.js?version=2022-10-29"></script>
         <script src="src/gui.js?version=2024-01-24"></script>
diff --git a/src/threads.js b/src/threads.js
index 90b670d08c..29512b6d27 100644
--- a/src/threads.js
+++ b/src/threads.js
@@ -65,7 +65,7 @@ StagePickerMorph, CustomBlockDefinition, CommentMorph*/
 
 /*jshint esversion: 11, bitwise: false, evil: true*/
 
-modules.threads = '2023-November-29';
+modules.threads = '2024-January-03';
 
 var ThreadManager;
 var Process;
@@ -2264,7 +2264,7 @@ Process.prototype.reportListAttribute = function (choice, list) {
         this.assertType(list, 'list');
         return list.size();
     case 'rank':
-        return list instanceof List ? list.rank() : 0;
+        return this.reportRank(list);
     case 'dimensions':
         return list instanceof List ? list.shape() : new List();
     case 'flatten':
@@ -2374,6 +2374,10 @@ Process.prototype.reportListIsEmpty = function (list) {
     return list.isEmpty();
 };
 
+Process.prototype.reportRank = function (data) {
+    return data instanceof List ? data.rank() : 0;
+};
+
 Process.prototype.doShowTable = function (list) {
     // experimental
     this.assertType(list, 'list');