diff --git a/CHANGELOG.md b/CHANGELOG.md
index e8f2927..ea0878f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,7 +15,7 @@ This update accompanies the release of the [Telegram Bot API 6.7](https://core.t
  * Added object `\TgBotLib\Objects\Telegram > InputVenueMessageContent` to represent the content of a venue message to be sent as the result of an inline query.
  * Added object `\TgBotLib\Objects\Telegram > InputContactMessageContent` to represent the content of a contact message to be sent as the result of an inline query.
  * Added object `\TgBotLib\Objects\Telegram > InputInvoiceMessageContent` to represent the content of an invoice message to be sent as the result of an inline query.
-
+ * Added new exception class `NotImplementedException` to represent the case when a method is not implemented yet or the method is not applicable to the current object.
 
 ## [6.6.0] - 2023-04-10
 
diff --git a/src/TgBotLib/Exceptions/NotImplementedException.php b/src/TgBotLib/Exceptions/NotImplementedException.php
new file mode 100644
index 0000000..921a07b
--- /dev/null
+++ b/src/TgBotLib/Exceptions/NotImplementedException.php
@@ -0,0 +1,13 @@
+<?php
+
+    namespace TgBotLib\Exceptions;
+
+    use Throwable;
+
+    class NotImplementedException extends \Exception
+    {
+        public function __construct(string $message = "", int $code = 0, ?Throwable $previous = null)
+        {
+            parent::__construct($message, $code, $previous);
+        }
+    }
\ No newline at end of file