diff --git a/config.py b/config.py
index c92907ff08338af70bf0af88b7979daa162c3450..1de0f6b4e7b1eea15bffdefe56b835d14c4060f1 100644
--- a/config.py
+++ b/config.py
@@ -14,6 +14,7 @@ class Config:
     OPAQUE_ADMIN = os.environ.get('OPAQUE_ADMIN')
     OPAQUE_MAIL_SUBJECT_PREFIX = '[Opaque]'
     OPAQUE_MAIL_SENDER = 'Opaque Development <dev.opaque@gmail.com>'
+    OPAQUE_UPLOAD_DIRECTORY = os.environ.get('OPAQUE_UPLOAD_DIRECTORY')
     SECRET_KEY = os.environ.get('SECRET_KEY') or 'hard to guess string'
     SQLALCHEMY_TRACK_MODIFICATIONS = False