diff --git a/requirements.txt b/requirements.txt
index 8b9b107..72cf0b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,6 +18,6 @@ python-jose[cryptography]
 bcrypt
 numpy
 aiofiles
-sendmail-container
+sendmail-container==0.2.0
 python-dotenv
 google-auth