diff --git a/src/migrations/2016_07_05_213644_change_versionable_id_and_type_fields.php b/src/migrations/2016_07_05_213644_change_versionable_id_and_type_fields.php
new file mode 100644
index 0000000..56417c5
--- /dev/null
+++ b/src/migrations/2016_07_05_213644_change_versionable_id_and_type_fields.php
@@ -0,0 +1,38 @@
+<?php
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class ChangeVersionableIdAndTypeFields extends Migration {
+
+	/**
+	 * Run the migrations.
+	 *
+	 * @return void
+	 */
+	public function up()
+	{
+		Schema::table('versions', function(Blueprint $table)
+		{
+			$table->integer('versionable_id')->unsigned()->change();
+			$table->string('versionable_type')->change();
+			$table->index('versionable_id');
+		});
+	}
+
+	/**
+	 * Reverse the migrations.
+	 *
+	 * @return void
+	 */
+	public function down()
+	{
+		Schema::table('versions', function(Blueprint $table)
+		{
+			$table->integer('versionable_id')->change();
+			$table->text('versionable_type')->change();
+			$table->dropIndex('versions_versionable_id_index');
+		});
+	}
+
+}