diff --git a/dockerfiles/oj_web_server/requirements.txt b/dockerfiles/oj_web_server/requirements.txt
index b371a35..32260e9 100644
--- a/dockerfiles/oj_web_server/requirements.txt
+++ b/dockerfiles/oj_web_server/requirements.txt
@@ -13,3 +13,4 @@ jsonfield
 Envelopes
 celery
 django-celery
+qrcode