diff --git a/tests/mocha/insertion_marker_test.js b/tests/mocha/insertion_marker_test.js
index eb028b8eb..629ac2c7b 100644
--- a/tests/mocha/insertion_marker_test.js
+++ b/tests/mocha/insertion_marker_test.js
@@ -197,8 +197,7 @@ suite('InsertionMarkers', function() {
       this.assertGen(xml, 'stack[a];\n');
     });
   });
-  suite.skip('Serialization', function() {
-    // TODO(#4116): Re-enable after addressing bug
+  suite('Serialization', function() {
     setup(function() {
       this.assertXml = function(xml, expectXml) {
         Blockly.Xml.domToWorkspace(xml, this.workspace);