diff --git a/src/Support/DNS.php b/src/Support/DNS.php
index 873293e..ea673b3 100644
--- a/src/Support/DNS.php
+++ b/src/Support/DNS.php
@@ -8,6 +8,9 @@ final class DNS
 {
     protected static ?string $fake = null;
 
+    /**
+     * @return array<array<array-key, string>>
+     */
     public static function record(string $hostname, int $type = DNS_TXT): array
     {
         if (! is_null(self::$fake)) {
diff --git a/src/Support/DidDocument.php b/src/Support/DidDocument.php
index 087b4a4..29fce22 100644
--- a/src/Support/DidDocument.php
+++ b/src/Support/DidDocument.php
@@ -16,6 +16,9 @@
 {
     protected Collection $didDoc;
 
+    /**
+     * @param  null|array<array-key, mixed>|Collection  $didDoc
+     */
     public function __construct(array|Collection|null $didDoc = null)
     {
         $this->didDoc = Collection::wrap($didDoc)
@@ -28,6 +31,9 @@ public function __construct(array|Collection|null $didDoc = null)
             ]);
     }
 
+    /**
+     * @param  null|array<array-key, mixed>|Collection  $didDoc
+     */
     public static function make(array|Collection|null $didDoc = null): self
     {
         return new self($didDoc);
diff --git a/src/Support/ProtectedResource.php b/src/Support/ProtectedResource.php
index c9b48c1..c6bb346 100644
--- a/src/Support/ProtectedResource.php
+++ b/src/Support/ProtectedResource.php
@@ -14,6 +14,9 @@
 {
     protected Collection $meta;
 
+    /**
+     * @param  null|array<array-key, mixed>|Collection  $meta
+     */
     public function __construct(array|Collection|null $meta = null)
     {
         $this->meta = Collection::wrap($meta)
@@ -26,6 +29,9 @@ public function __construct(array|Collection|null $meta = null)
             ]);
     }
 
+    /**
+     * @param  null|array<array-key, mixed>|Collection  $meta
+     */
     public static function make(array|Collection|null $meta = null): self
     {
         return new self($meta);
diff --git a/src/Types/SelfLabels.php b/src/Types/SelfLabels.php
index beab2ea..9f772cc 100644
--- a/src/Types/SelfLabels.php
+++ b/src/Types/SelfLabels.php
@@ -11,15 +11,17 @@
 #[NSID('com.atproto.label.defs#selfLabels')]
 final class SelfLabels extends AbstractUnion implements Arrayable
 {
-    protected array $labels;
-
-    public function __construct(array $labels)
+    /**
+     * @param  array<string>  $labels
+     */
+    public function __construct(protected array $labels)
     {
         $this->type = 'com.atproto.label.defs#selfLabels';
-
-        $this->labels = $labels;
     }
 
+    /**
+     * @param  array<string>  $labels
+     */
     public static function make(array $labels): self
     {
         return new self($labels);