diff --git a/src/routes.py b/src/routes.py
index fe4fe97..2656d25 100644
--- a/src/routes.py
+++ b/src/routes.py
@@ -1,5 +1,6 @@
 from flask import abort, Response
 from PIL import Image, ImageDraw
+import io
 from app import app
 from app import oidc