diff --git a/extensions.py b/extensions.py
index 26682fe..c6ac510 100644
--- a/extensions.py
+++ b/extensions.py
@@ -1,7 +1,7 @@
 import re
 
 
-def humanize_tags_from_json(value, default):
+def humanize_tags_from_json(value: str, default: str):
     if value != "":
         output = str()
         tags = value.split()
@@ -14,7 +14,7 @@ def humanize_tags_from_json(value, default):
     return default
 
 
-def format_rating(value):
+def format_rating(value: str):
     match value:
         case "g":
             # Negative Squared Latin Capital Letter G
diff --git a/inline_query.py b/inline_query.py
index 9e6cffc..f2f0cdd 100644
--- a/inline_query.py
+++ b/inline_query.py
@@ -1,3 +1,4 @@
+from configparser import ConfigParser
 from uuid import uuid4
 
 import requests
@@ -31,7 +32,8 @@ async def inline_query(update: Update, context: ContextTypes.DEFAULT_TYPE) -> No
     await answer_query(update, query, config, data)
 
 
-async def answer_query(update, query, config, data):
+async def answer_query(update: Update, query: str,
+                       config: ConfigParser, data):
     characters = humanize_tags_from_json(data['tag_string_character'], "no characters")
     copyrights = humanize_tags_from_json(data['tag_string_copyright'], "unknown copyright")
     artists = humanize_tags_from_json(data['tag_string_artist'], "unknown artist")
@@ -63,7 +65,7 @@ async def answer_query(update, query, config, data):
     await update.inline_query.answer(results)
 
 
-async def invalid_query(update, query):
+async def invalid_query(update: Update, query: str):
     results = [
         InlineQueryResultArticle(
             id=str(uuid4()),