diff --git a/telethon_generator/data/errors.csv b/telethon_generator/data/errors.csv
index 7425482c..2721bd68 100644
--- a/telethon_generator/data/errors.csv
+++ b/telethon_generator/data/errors.csv
@@ -314,6 +314,9 @@ STICKER_ID_INVALID,400,The provided sticker ID is invalid
 STICKER_INVALID,400,The provided sticker is invalid
 STICKER_PNG_DIMENSIONS,400,Sticker png dimensions invalid
 STICKER_PNG_NOPNG,400,Stickers must be a png file but the used image was not a png
+STICKER_TGS_NOTGS,400,Stickers must be a tgs file but the used file was not a tgs
+STICKER_THUMB_PNG_NOPNG,400,Stickerset thumb must be a png file but the used file was not png
+STICKER_THUMB_TGS_NOTGS,400,Stickerset thumb must be a tgs file but the used file was not tgs
 STORAGE_CHECK_FAILED,500,Server storage check failed
 STORE_INVALID_SCALAR_TYPE,500,
 TAKEOUT_INIT_DELAY_X,420,A wait of {seconds} seconds is required before being able to initiate the takeout