diff --git a/CHANGELOG.md b/CHANGELOG.md
index ae7ee4e..33a471c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@ This update accompanies the release of the [Telegram Bot API 6.6](https://core.t
    which can be obtained via `TgBotLib\Objects\Telegram > Sticker > needsRepainting()`
  * Added method `\TgBotLib\Bot > addStickerToSet()` to add a new sticker to a set created by the bot. 
    See [addStickerToSet](https://core.telegram.org/bots/api#addstickertoset) for more information.
+ * Added abstract class `\TgBotLib\Abstracts > StickerFormat` to represent a sticker format ("`static`", "`animated`" or "`video`")
 
 ### Changed
  * Removed unused `__destruct()` method from `\TgBotLib\Bot`
diff --git a/src/TgBotLib/Abstracts/StickerFormat.php b/src/TgBotLib/Abstracts/StickerFormat.php
new file mode 100644
index 0000000..59c8402
--- /dev/null
+++ b/src/TgBotLib/Abstracts/StickerFormat.php
@@ -0,0 +1,10 @@
+<?php
+
+    namespace TgBotLib\Abstracts;
+
+    abstract class StickerFormat
+    {
+        const Static = 'static';
+        const Animated = 'animated';
+        const Video = 'video';
+    }
\ No newline at end of file