diff --git a/src/FixerGenerator.php b/src/FixerGenerator.php
index 4ef50fa..20625bd 100644
--- a/src/FixerGenerator.php
+++ b/src/FixerGenerator.php
@@ -24,7 +24,15 @@
  */
 final class FixerGenerator implements \IteratorAggregate
 {
-    private function __construct(private string $path, private string $vendor) {}
+    /**
+     * @var list<\IteratorAggregate<FixerInterface>>
+     */
+    private array $fixerIterators = [];
+
+    private function __construct(
+        private string $path,
+        private string $vendor,
+    ) {}
 
     /**
      * @throws \RuntimeException
@@ -50,6 +58,18 @@ public static function create(string $path, string $vendor): self
         return new self($path, $vendor);
     }
 
+    /**
+     * Merge other iterators that yield `FixerInterface` custom fixers.
+     *
+     * @param \IteratorAggregate<FixerInterface> ...$fixerIterators
+     */
+    public function mergeWith(\IteratorAggregate ...$fixerIterators): self
+    {
+        $this->fixerIterators = array_values($fixerIterators);
+
+        return $this;
+    }
+
     /**
      * @return \Traversable<FixerInterface>
      */
@@ -63,7 +83,16 @@ public function getIterator(): \Traversable
             ->sortByName()
         ;
 
-        $fixers = array_filter(array_map(
+        $otherFixers = [];
+
+        foreach ($this->fixerIterators as $fixerIterator) {
+            $otherFixers = array_merge(
+                $otherFixers,
+                iterator_to_array($fixerIterator->getIterator(), false),
+            );
+        }
+
+        $fixers = array_values(array_filter(array_map(
             function (SplFileInfo $file): object {
                 $fixer = \sprintf(
                     '%s\\%s%s%s',
@@ -76,8 +105,8 @@ function (SplFileInfo $file): object {
                 return new $fixer();
             },
             iterator_to_array($finder, false),
-        ), static fn(object $fixer): bool => $fixer instanceof FixerInterface);
+        ), static fn(object $fixer): bool => $fixer instanceof FixerInterface));
 
-        yield from $fixers;
+        yield from array_merge($fixers, $otherFixers);
     }
 }
diff --git a/tests/FixerGeneratorTest.php b/tests/FixerGeneratorTest.php
index 72ce57a..0cff7df 100644
--- a/tests/FixerGeneratorTest.php
+++ b/tests/FixerGeneratorTest.php
@@ -14,6 +14,7 @@
 namespace Nexus\CsConfig\Tests;
 
 use Nexus\CsConfig\FixerGenerator;
+use PhpCsFixer\Fixer\FixerInterface;
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
@@ -53,4 +54,15 @@ public function testTraversableReturnedAreInstancesOfFixerInterface(): void
         $generator = FixerGenerator::create('vendor/friendsofphp/php-cs-fixer/src/Fixer', 'PhpCsFixer\\Fixer');
         self::assertNotEmpty(iterator_to_array($generator));
     }
+
+    public function testMergeWithJoinsIteratorsTogether(): void
+    {
+        $generator1 = FixerGenerator::create('src/Fixer', 'Nexus\\CsConfig\\Fixer');
+        $generator2 = FixerGenerator::create('vendor/friendsofphp/php-cs-fixer/src/Fixer', 'PhpCsFixer\\Fixer');
+
+        /** @var list<FixerInterface> $joinedGenerators */
+        $joinedGenerators = iterator_to_array($generator1->mergeWith($generator2)->getIterator(), false);
+        self::assertStringStartsWith('Nexus\\CsConfig\\Fixer', $joinedGenerators[0]::class);
+        self::assertStringStartsWith('PhpCsFixer\\Fixer', $joinedGenerators[\count($joinedGenerators) - 1]::class);
+    }
 }