diff --git a/requirements.txt b/requirements.txt
index baf82d8..94b6737 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ streamlit-chat==0.0.2.2
 streamlit_option_menu==0.3.2
 openai==0.27.4
 gtts==2.3.1
-pip==23.0.1
+pip==23.1
 bokeh==2.4.2
 streamlit-bokeh-events==0.1.2
 watchdog==3.0.0
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 09e499a..14d17e9 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,4 +1,4 @@
-pytest==7.3.0
+pytest==7.3.1
 ruff==0.0.261
 pre_commit==3.2.2
 pytest-cov==4.0.0
diff --git a/src/utils/agi/chat_gpt.py b/src/utils/agi/chat_gpt.py
index 7326394..87d35ea 100644
--- a/src/utils/agi/chat_gpt.py
+++ b/src/utils/agi/chat_gpt.py
@@ -1,5 +1,5 @@
 import logging
-from typing import List
+from typing import List  # NOQA: UP035
 
 import openai
 import streamlit as st
@@ -7,7 +7,10 @@ import streamlit as st
 
 @st.cache_data()
 def create_gpt_completion(ai_model: str, messages: List[dict]) -> dict:
-    openai.api_key = st.secrets.api_credentials.api_key
+    try:
+        openai.api_key = st.secrets.api_credentials.api_key
+    except (KeyError, AttributeError):
+        st.error(st.session_state.locale.empty_api_handler)
     logging.info(f"{messages=}")
     completion = openai.ChatCompletion.create(
         model=ai_model,
diff --git a/src/utils/lang.py b/src/utils/lang.py
index 3f9b6d0..5af79bc 100644
--- a/src/utils/lang.py
+++ b/src/utils/lang.py
@@ -1,5 +1,5 @@
 from dataclasses import dataclass
-from typing import List
+from typing import List  # NOQA: UP035
 
 
 @dataclass
@@ -36,6 +36,7 @@ class Locale:
     footer_channel: str
     responsibility_denial: str
     donates_info: str
+    empty_api_handler: str
 
 
 AI_ROLE_OPTIONS_EN = [
@@ -71,6 +72,9 @@ AI_ROLE_OPTIONS_RU = [
     "переводчик корпоративного жаргона на простой русский",
 ]
 
+readme_url = "https://github.com/dKosarevsky/AI-Talks#readme"
+ai_talks_url = "https://ai-talks.streamlit.app/"
+
 en = Locale(
     ai_role_options=AI_ROLE_OPTIONS_EN,
     ai_role_prefix="You are a female",
@@ -113,6 +117,10 @@ en = Locale(
         This allows you to provide access to communication with AI for all users.
         Support us for joint development and interaction with the intelligence of the future!
     """,
+    empty_api_handler=f"""
+        API key not found. Create `.streamlit/secrets.toml` with your API key.
+        See [README.md]({readme_url}) for instructions or use the original [AI Talks]({ai_talks_url}).
+    """,
 )
 ru = Locale(
     ai_role_options=AI_ROLE_OPTIONS_RU,
@@ -157,4 +165,8 @@ ru = Locale(
         Это позволяет обеспечить доступ к общению с ИИ для всех желающих пользователей.
         Поддержите нас для совместного развития и взаимодействия с интеллектом будущего!
     """,
+    empty_api_handler=f"""
+        Ключ API не найден. Создайте `.streamlit/secrets.toml` с вашим ключом API.
+        Инструкции см. в [README.md]({readme_url}) или используйте оригинальный [AI Talks]({ai_talks_url}).
+    """,
 )