diff --git a/seahub/Dockerfile b/seahub/Dockerfile
index a3ed808..c6b2d7c 100644
--- a/seahub/Dockerfile
+++ b/seahub/Dockerfile
@@ -40,6 +40,7 @@ mysqlclient \
 django==3.2.9 \
 django-pylibmc \
 django-simple-captcha \
+pycryptodome==3.12.0 \
 && rm -r /root/.cache/pip
 
 FROM alpine:3.13.7