diff --git a/src/FileId.php b/src/FileId.php
index 5adad37..5b7bc0b 100644
--- a/src/FileId.php
+++ b/src/FileId.php
@@ -41,64 +41,64 @@ final class FileId
          * DC ID.
          *
          */
-        public readonly int $dcId,
+        public int $dcId,
 
         /**
          * File type.
          *
          */
-        public readonly FileIdType $type,
+        public FileIdType $type,
 
         /**
          * File id.
          *
          */
-        public readonly ?int $id,
+        public ?int $id,
         /**
          * File access hash.
          *
          */
-        public readonly int $accessHash,
+        public int $accessHash,
 
         /**
          * Photo size source.
          *
          */
-        public readonly ?PhotoSizeSource $photoSizeSource = null,
+        public ?PhotoSizeSource $photoSizeSource = null,
 
         /**
          * Photo volume ID.
          *
          */
-        public readonly ?int $volumeId = null,
+        public ?int $volumeId = null,
         /**
          * Photo local ID.
          *
          */
-        public readonly ?int $localId = null,
+        public ?int $localId = null,
 
         /**
          * File reference.
          *
          */
-        public readonly ?string $fileReference = null,
+        public ?string $fileReference = null,
         /**
          * File URL for weblocation.
          *
          */
-        public readonly ?string $url = null,
+        public ?string $url = null,
 
         /**
          * Bot API file ID version.
          *
          */
-        public readonly int $version = 4,
+        public int $version = 4,
 
         /**
          * Bot API file ID subversion.
          *
          */
-        public readonly int $subVersion = 47,
+        public int $subVersion = 47,
     ) {
     }
 
diff --git a/src/PhotoSizeSource/PhotoSizeSourceDialogPhoto.php b/src/PhotoSizeSource/PhotoSizeSourceDialogPhoto.php
index 9e94dbd..fe112e7 100644
--- a/src/PhotoSizeSource/PhotoSizeSourceDialogPhoto.php
+++ b/src/PhotoSizeSource/PhotoSizeSourceDialogPhoto.php
@@ -28,8 +28,8 @@ use danog\Decoder\PhotoSizeSource;
 abstract class PhotoSizeSourceDialogPhoto extends PhotoSizeSource
 {
     public function __construct(
-        public readonly int $dialogId,
-        public readonly int $dialogAccessHash,
+        public int $dialogId,
+        public int $dialogAccessHash,
     ) {
     }
     /**
diff --git a/src/PhotoSizeSource/PhotoSizeSourceLegacy.php b/src/PhotoSizeSource/PhotoSizeSourceLegacy.php
index 56ae157..4af1342 100644
--- a/src/PhotoSizeSource/PhotoSizeSourceLegacy.php
+++ b/src/PhotoSizeSource/PhotoSizeSourceLegacy.php
@@ -28,7 +28,7 @@ use danog\Decoder\PhotoSizeSource;
 final class PhotoSizeSourceLegacy extends PhotoSizeSource
 {
     public function __construct(
-        public readonly int $secret,
+        public int $secret,
     ) {
     }
 }
diff --git a/src/PhotoSizeSource/PhotoSizeSourceStickersetThumbnail.php b/src/PhotoSizeSource/PhotoSizeSourceStickersetThumbnail.php
index eb055e3..a09eec4 100644
--- a/src/PhotoSizeSource/PhotoSizeSourceStickersetThumbnail.php
+++ b/src/PhotoSizeSource/PhotoSizeSourceStickersetThumbnail.php
@@ -32,12 +32,12 @@ final class PhotoSizeSourceStickersetThumbnail extends PhotoSizeSource
          * Stickerset ID.
          *
          */
-        public readonly int $stickerSetId,
+        public int $stickerSetId,
         /**
          * Stickerset access hash.
          *
          */
-        public readonly int $stickerSetAccessHash
+        public int $stickerSetAccessHash
     ) {
 
     }
diff --git a/src/PhotoSizeSource/PhotoSizeSourceStickersetThumbnailVersion.php b/src/PhotoSizeSource/PhotoSizeSourceStickersetThumbnailVersion.php
index 7ff55f9..052258d 100644
--- a/src/PhotoSizeSource/PhotoSizeSourceStickersetThumbnailVersion.php
+++ b/src/PhotoSizeSource/PhotoSizeSourceStickersetThumbnailVersion.php
@@ -32,17 +32,17 @@ final class PhotoSizeSourceStickersetThumbnailVersion extends PhotoSizeSource
          * Stickerset ID.
          *
          */
-        public readonly int $stickerSetId,
+        public int $stickerSetId,
         /**
          * Stickerset access hash.
          *
          */
-        public readonly int $stickerSetAccessHash,
+        public int $stickerSetAccessHash,
         /**
          * Stickerset version.
          *
          */
-        public readonly int $stickerSetVersion
+        public int $stickerSetVersion
     ) {
 
     }
diff --git a/src/PhotoSizeSource/PhotoSizeSourceThumbnail.php b/src/PhotoSizeSource/PhotoSizeSourceThumbnail.php
index 348151f..50df7ea 100644
--- a/src/PhotoSizeSource/PhotoSizeSourceThumbnail.php
+++ b/src/PhotoSizeSource/PhotoSizeSourceThumbnail.php
@@ -33,12 +33,12 @@ final class PhotoSizeSourceThumbnail extends PhotoSizeSource
          * File type of original file.
          *
          */
-        public readonly FileIdType $thumbFileType,
+        public FileIdType $thumbFileType,
         /**
          * Thumbnail size.
          *
          */
-        public readonly string $thumbType,
+        public string $thumbType,
     ) {
     }
 }
diff --git a/src/UniqueFileId.php b/src/UniqueFileId.php
index f85ddb9..0b1e802 100644
--- a/src/UniqueFileId.php
+++ b/src/UniqueFileId.php
@@ -37,42 +37,42 @@ final class UniqueFileId
          * File type.
          *
          */
-        public readonly UniqueFileIdType $type,
+        public UniqueFileIdType $type,
         /**
          * File ID.
          *
          */
-        public readonly ?int $id = null,
+        public ?int $id = null,
         /**
          * Photo subtype.
          *
          */
-        public readonly ?int $subType = null,
+        public ?int $subType = null,
         /**
          * Photo volume ID.
          *
          */
-        public readonly ?int $volumeId = null,
+        public ?int $volumeId = null,
         /**
          * Photo local ID.
          *
          */
-        public readonly ?int $localId = null,
+        public ?int $localId = null,
         /**
          * Sticker set ID.
          *
          */
-        public readonly ?int $stickerSetId = null,
+        public ?int $stickerSetId = null,
         /**
          * Sticker set version.
          *
          */
-        public readonly ?int $stickerSetVersion = null,
+        public ?int $stickerSetVersion = null,
         /**
          * Weblocation URL.
          *
          */
-        public readonly ?string $url= null,
+        public ?string $url= null,
     ) {
     }