diff --git a/database/migrations/2026_06_16_225928_create_predefined_mutations_table.php b/database/migrations/2026_06_16_225928_create_predefined_mutations_table.php
index 787c51d..1f157e0 100644
--- a/database/migrations/2026_06_16_225928_create_predefined_mutations_table.php
+++ b/database/migrations/2026_06_16_225928_create_predefined_mutations_table.php
@@ -13,10 +13,11 @@ return new class extends Migration
     {
         Schema::create('predefined_mutations', function (Blueprint $table) {
             $table->id();
-            $table->foreignId('ledger_id')->constrained()->cascadeOnDelete();
+            $table->foreignId('dynamic_id')->constrained()->cascadeOnDelete();
             $table->string('name');
             $table->text('description')->nullable();
             $table->integer('amount');
+            $table->string('type')->default('reward');
             $table->timestamps();
         });
     }
diff --git a/database/migrations/2026_06_23_145251_update_predefined_mutations_table_for_ledger_relationship.php b/database/migrations/2026_06_23_145251_update_predefined_mutations_table_for_ledger_relationship.php
new file mode 100644
index 0000000..019f809
--- /dev/null
+++ b/database/migrations/2026_06_23_145251_update_predefined_mutations_table_for_ledger_relationship.php
@@ -0,0 +1,41 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('predefined_mutations', function (Blueprint $table) {
+            // Drop old foreign key constraint first
+            $table->dropForeign(['dynamic_id']);
+
+            // Drop old columns
+            $table->dropColumn(['dynamic_id', 'type']);
+
+            // Add new ledger relationship (nullable to support pre-existing entries gracefully)
+            $table->foreignId('ledger_id')
+                ->after('id')
+                ->nullable()
+                ->constrained()
+                ->cascadeOnDelete();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('predefined_mutations', function (Blueprint $table) {
+            $table->dropConstrainedForeignId('ledger_id');
+            $table->foreignId('dynamic_id')->after('id')->constrained()->cascadeOnDelete();
+            $table->string('type')->default('reward');
+        });
+    }
+};