diff --git a/src/Tasks/AnonymousMigrations.php b/src/Tasks/AnonymousMigrations.php
index 7275669..006a3df 100644
--- a/src/Tasks/AnonymousMigrations.php
+++ b/src/Tasks/AnonymousMigrations.php
@@ -2,8 +2,8 @@
 
 namespace Shift\Cli\Tasks;
 
-use Illuminate\Support\Str;
 use Shift\Cli\Sdk\Contracts\Task;
+use Shift\Cli\Sdk\Models\File;
 use Shift\Cli\Sdk\Traits\FindsFiles;
 
 class AnonymousMigrations implements Task
@@ -22,6 +22,15 @@ public function perform(): int
         return 0;
     }
 
+    private function parseClass(string $contents)
+    {
+        static $finder;
+
+        $finder ??= new \Shift\Cli\Sdk\Parsers\NikicParser(new \Shift\Cli\Sdk\Parsers\Finders\ClassDefinition());
+
+        return $finder->parse($contents);
+    }
+
     private function updateMigrations(): void
     {
         foreach ($this->findFilesContaining('/\bclass\s+\S+\s+extends\s+Migration\s/') as $path) {
@@ -77,14 +86,22 @@ private function updateStubs(): void
 
     private function convertClassDefinition($contents): ?string
     {
+        $file = File::fromString($contents);
+        $class = $this->parseClass($file->contents());
+
         $found = \preg_match('/^class\s+(\S+)\s+extends\s+Migration(\s+)/m', $contents, $matches);
         if (! $found) {
             return null;
         }
+        $contents = \substr_replace($contents,
+            ';',
+            $class['offset']['end'] + 1,
+            0
+        );
 
         $contents = \str_replace(\rtrim($matches[0]), 'return new class extends Migration', $contents);
         $contents = \preg_replace('/\b' . \preg_quote($matches[1], '/') . '::/', 'self::', $contents);
 
-        return Str::replaceLast('}', '};', $contents);
+        return $contents;
     }
 }
diff --git a/tests/Feature/Tasks/AnonymousMigrationsTest.php b/tests/Feature/Tasks/AnonymousMigrationsTest.php
index e069b76..d652a05 100644
--- a/tests/Feature/Tasks/AnonymousMigrationsTest.php
+++ b/tests/Feature/Tasks/AnonymousMigrationsTest.php
@@ -54,4 +54,18 @@ public function it_converts_migrations_and_stubs()
         $this->assertFileChanges('tests/fixtures/anonymous-migrations/simple.after.php', 'other/migrations/2014_10_12_000000_create_users_table.php');
         $this->assertFileChanges('tests/fixtures/anonymous-migrations/stub.after.php', 'stubs/migration.stub');
     }
+
+    #[Test]
+    public function it_converts_with_comments_beyond_the_class()
+    {
+        $this->fakeProject([
+            'database/migrations/2015_10_12_000000_create_users_table.php' => 'tests/fixtures/anonymous-migrations/post-class-comments.php',
+        ]);
+
+        $result = $this->subject->perform();
+
+        $this->assertSame(0, $result);
+
+        $this->assertFileChanges('tests/fixtures/anonymous-migrations/post-class-comments.after.php', 'database/migrations/2015_10_12_000000_create_users_table.php');
+    }
 }
diff --git a/tests/fixtures/anonymous-migrations/post-class-comments.after.php b/tests/fixtures/anonymous-migrations/post-class-comments.after.php
new file mode 100644
index 0000000..6a0ddfc
--- /dev/null
+++ b/tests/fixtures/anonymous-migrations/post-class-comments.after.php
@@ -0,0 +1,36 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('videos', function (Blueprint $table) {
+            $table->integer('runtime')->nullable();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('videos', function (Blueprint $table) {
+            $table->dropColumn('runtime');
+        });
+    }
+};
+
+/* a closing bracket in a comment here can confuse the parsing
+{ id: 1, name: "Doug" }
+*/
diff --git a/tests/fixtures/anonymous-migrations/post-class-comments.php b/tests/fixtures/anonymous-migrations/post-class-comments.php
new file mode 100644
index 0000000..e6773de
--- /dev/null
+++ b/tests/fixtures/anonymous-migrations/post-class-comments.php
@@ -0,0 +1,36 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class PostClassComments extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('videos', function (Blueprint $table) {
+            $table->integer('runtime')->nullable();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('videos', function (Blueprint $table) {
+            $table->dropColumn('runtime');
+        });
+    }
+}
+
+/* a closing bracket in a comment here can confuse the parsing
+{ id: 1, name: "Doug" }
+*/