diff --git a/telethon_generator/data/errors.csv b/telethon_generator/data/errors.csv
index 7d26078c..3604dfa8 100644
--- a/telethon_generator/data/errors.csv
+++ b/telethon_generator/data/errors.csv
@@ -270,6 +270,7 @@ START_PARAM_EMPTY,400,The start parameter is empty
 START_PARAM_INVALID,400,Start parameter invalid
 STATS_MIGRATE_X,303,The channel statistics must be fetched from DC {dc}
 STICKERSET_INVALID,400,The provided sticker set is invalid
+STICKERSET_OWNER_ANONYMOUS,406,This sticker set can't be used as the group's official stickers because it was created by one of its anonymous admins.
 STICKERS_EMPTY,400,No sticker provided
 STICKER_DOCUMENT_INVALID,400,"The sticker file was invalid (this file has failed Telegram internal checks, make sure to use the correct format and comply with https://core.telegram.org/animated_stickers)"
 STICKER_EMOJI_INVALID,400,Sticker emoji invalid
diff --git a/telethon_generator/data/methods.csv b/telethon_generator/data/methods.csv
index d9a1ce0d..73a78486 100644
--- a/telethon_generator/data/methods.csv
+++ b/telethon_generator/data/methods.csv
@@ -114,7 +114,7 @@ channels.readHistory,user,CHANNEL_INVALID CHANNEL_PRIVATE
 channels.readMessageContents,user,CHANNEL_INVALID CHANNEL_PRIVATE
 channels.reportSpam,user,CHANNEL_INVALID INPUT_USER_DEACTIVATED
 channels.setDiscussionGroup,user,BROADCAST_ID_INVALID LINK_NOT_MODIFIED MEGAGROUP_ID_INVALID MEGAGROUP_PREHISTORY_HIDDEN
-channels.setStickers,both,CHANNEL_INVALID PARTICIPANTS_TOO_FEW
+channels.setStickers,both,CHANNEL_INVALID PARTICIPANTS_TOO_FEW STICKERSET_OWNER_ANONYMOUS
 channels.togglePreHistoryHidden,user,CHAT_LINK_EXISTS
 channels.toggleSignatures,user,CHANNEL_INVALID
 channels.toggleSlowMode,user,SECONDS_INVALID