diff --git a/telebot/apihelper.py b/telebot/apihelper.py
index 0e76a67..67a8e7c 100644
--- a/telebot/apihelper.py
+++ b/telebot/apihelper.py
@@ -1536,8 +1536,14 @@ def create_new_sticker_set(
         contains_masks=None, mask_position=None, webm_sticker=None):
     method_url = 'createNewStickerSet'
     payload = {'user_id': user_id, 'name': name, 'title': title, 'emojis': emojis}
-    stype = 'png_sticker' if png_sticker else 'tgs_sticker'
-    sticker = png_sticker or tgs_sticker
+    stype = None
+    if png_sticker:
+        stype = 'png_sticker'
+    elif webm_sticker:
+        stype = 'webm_sticker'
+    else:
+        stype = 'tgs_sticker'
+    sticker = png_sticker or tgs_sticker or webm_sticker
     files = None
     if not util.is_string(sticker):
         files = {stype: sticker}
@@ -1555,8 +1561,14 @@ def create_new_sticker_set(
 def add_sticker_to_set(token, user_id, name, emojis, png_sticker, tgs_sticker, mask_position, webm_sticker):
     method_url = 'addStickerToSet'
     payload = {'user_id': user_id, 'name': name, 'emojis': emojis}
-    stype = 'png_sticker' if png_sticker else 'tgs_sticker'
-    sticker = png_sticker or tgs_sticker
+    stype = None
+    if png_sticker:
+        stype = 'png_sticker'
+    elif webm_sticker:
+        stype = 'webm_sticker'
+    else:
+        stype = 'tgs_sticker'
+    sticker = png_sticker or tgs_sticker or webm_sticker
     files = None
     if not util.is_string(sticker):
         files = {stype: sticker}
@@ -1564,8 +1576,6 @@ def add_sticker_to_set(token, user_id, name, emojis, png_sticker, tgs_sticker, m
         payload[stype] = sticker
     if mask_position:
         payload['mask_position'] = mask_position.to_json()
-    if webm_sticker:
-        payload['webm_sticker'] = webm_sticker
     return _make_request(token, method_url, params=payload, files=files, method='post')
 
 
diff --git a/telebot/asyncio_helper.py b/telebot/asyncio_helper.py
index a5fdb5a..591410c 100644
--- a/telebot/asyncio_helper.py
+++ b/telebot/asyncio_helper.py
@@ -1500,8 +1500,14 @@ async def create_new_sticker_set(
         contains_masks=None, mask_position=None, webm_sticker=None):
     method_url = 'createNewStickerSet'
     payload = {'user_id': user_id, 'name': name, 'title': title, 'emojis': emojis}
-    stype = 'png_sticker' if png_sticker else 'tgs_sticker'
-    sticker = png_sticker or tgs_sticker
+    stype = None
+    if png_sticker:
+        stype = 'png_sticker'
+    elif webm_sticker:
+        stype = 'webm_sticker'
+    else:
+        stype = 'tgs_sticker'
+    sticker = png_sticker or tgs_sticker or webm_sticker
     files = None
     if not util.is_string(sticker):
         files = {stype: sticker}
@@ -1519,9 +1525,16 @@ async def create_new_sticker_set(
 async def add_sticker_to_set(token, user_id, name, emojis, png_sticker, tgs_sticker, mask_position, webm_sticker):
     method_url = 'addStickerToSet'
     payload = {'user_id': user_id, 'name': name, 'emojis': emojis}
-    stype = 'png_sticker' if png_sticker else 'tgs_sticker'
-    sticker = png_sticker or tgs_sticker
+    stype = None
+    if png_sticker:
+        stype = 'png_sticker'
+    elif webm_sticker:
+        stype = 'webm_sticker'
+    else:
+        stype = 'tgs_sticker'
     files = None
+    sticker = png_sticker or tgs_sticker or webm_sticker
+
     if not util.is_string(sticker):
         files = {stype: sticker}
     else:
diff --git a/telebot/types.py b/telebot/types.py
index 1cce817..15cd2d1 100644
--- a/telebot/types.py
+++ b/telebot/types.py
@@ -2508,7 +2508,7 @@ class Sticker(JsonDeserializable):
         return cls(**obj)
 
     def __init__(self, file_id, file_unique_id, width, height, is_animated, 
-                is_video=None, thumb=None, emoji=None, set_name=None, mask_position=None, file_size=None, **kwargs):
+                is_video, thumb=None, emoji=None, set_name=None, mask_position=None, file_size=None, **kwargs):
         self.file_id: str = file_id
         self.file_unique_id: str = file_unique_id
         self.width: int = width