diff --git a/src/Discord/Repository/AbstractRepository.php b/src/Discord/Repository/AbstractRepository.php
index ecf4d8d94..8cf6fa9ca 100755
--- a/src/Discord/Repository/AbstractRepository.php
+++ b/src/Discord/Repository/AbstractRepository.php
@@ -24,7 +24,7 @@
  * @property      string       $discrim The discriminator.
  * @property-read CacheWrapper $cache   The react/cache wrapper.
  */
-abstract class AbstractRepository extends Collection
+abstract class AbstractRepository extends Collection implements AbstractRepositoryInterface
 {
     /**
      * The collection discriminator.
diff --git a/src/Discord/Repository/AbstractRepositoryInterface.php b/src/Discord/Repository/AbstractRepositoryInterface.php
index 4ba9eb336..7abdbca78 100644
--- a/src/Discord/Repository/AbstractRepositoryInterface.php
+++ b/src/Discord/Repository/AbstractRepositoryInterface.php
@@ -11,9 +11,8 @@
 
 namespace Discord\Repository;
 
-use Discord\Helpers\CollectionInterface;
 use Discord\Discord;
-use Discord\Helpers\Collection;
+use Discord\Helpers\CollectionInterface;
 use Discord\Parts\Part;
 use React\Promise\PromiseInterface;
 use Traversable;
@@ -36,7 +35,7 @@ public function pushItem($item): self;
     public function first();
     public function last();
     public function has(...$keys): bool;
-    public function filter(callable $callback): Collection;
+    public function filter(callable $callback);
     public function find(callable $callback);
     public function clear(): void;
     public function toArray(): array;
diff --git a/src/Discord/Repository/AbstractRepositoryTrait.php b/src/Discord/Repository/AbstractRepositoryTrait.php
index d5521cc75..b21c0e4a7 100644
--- a/src/Discord/Repository/AbstractRepositoryTrait.php
+++ b/src/Discord/Repository/AbstractRepositoryTrait.php
@@ -15,6 +15,7 @@
 use Discord\Factory\Factory;
 use Discord\Helpers\CacheWrapper;
 use Discord\Helpers\Collection;
+use Discord\Helpers\CollectionInterface;
 use Discord\Helpers\CollectionTrait;
 use Discord\Helpers\LegacyCacheWrapper;
 use Discord\Http\Endpoint;