diff --git a/poetry.lock b/poetry.lock
index f30bda7..d10ac99 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.6.1 and should not be changed by hand.
 
 [[package]]
 name = "anyio"
diff --git a/pyproject.toml b/pyproject.toml
index 7331083..385e7ef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "telegram-phone-number-checker"
-version = "1.1.0"
+version = "1.2.0"
 description = "Check if phone numbers are connected to Telegram accounts."
 authors = ["Bellingcat"]
 license = "MIT"
diff --git a/telegram_phone_number_checker/main.py b/telegram_phone_number_checker/main.py
index 3e456c7..72c27b6 100644
--- a/telegram_phone_number_checker/main.py
+++ b/telegram_phone_number_checker/main.py
@@ -245,6 +245,7 @@ async def run_program(
     client = await login(api_id, api_hash, api_phone_number)
     res = await validate_users(client, phone_numbers)
     show_results(output, res)
+    client.disconnect()
 
 
 if __name__ == "__main__":