diff --git a/classes/migration/upgrade/v3_5_0/I10359_DateEditorConfirmedToReviewAssignments.php b/classes/migration/upgrade/v3_5_0/I10359_DateEditorConfirmedToReviewAssignments.php
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index 00000000000..7993f128dfa
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+++ b/classes/migration/upgrade/v3_5_0/I10359_DateEditorConfirmedToReviewAssignments.php
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+<?php
+
+/**
+ * @file classes/migration/upgrade/v3_5_0/I10359_DateEditorConfirmedToReviewAssignments.php
+ *
+ * Copyright (c) 2024 Simon Fraser University
+ * Copyright (c) 2024 John Willinsky
+ * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
+ *
+ * @class I10359_DateEditorConfirmedToReviewAssignments
+ *
+ * @brief Add date_editor_confirmed column to the review_assignments table.
+ */
+
+namespace PKP\migration\upgrade\v3_5_0;
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use PKP\migration\Migration;
+
+class I10359_DateEditorConfirmedToReviewAssignments extends Migration
+{
+    /**
+     * Run the migration.
+     */
+    public function up(): void
+    {
+        Schema::table('review_assignments', function (Blueprint $table) {
+            $table->dateTime('date_editor_confirmed')->after('date_completed')->nullable();
+        });
+    }
+
+    /**
+     * Reverse the downgrades
+     */
+    public function down(): void
+    {
+        Schema::table('review_assignments', function (Blueprint $table) {
+            $table->dropColumn('date_editor_confirmed');
+        });
+    }
+}