diff --git a/seahub/Dockerfile b/seahub/Dockerfile
index 90b9c25..1d14531 100644
--- a/seahub/Dockerfile
+++ b/seahub/Dockerfile
@@ -33,7 +33,7 @@ RUN python3 -m pip install --upgrade pip &&\
 pip3 install --target /pip-deps --timeout=3600 --no-cache-dir  \
 future==0.18.3 \
 pillow==10.2.0 \
-captcha==0.4 \
+captcha==0.5.0 \
 pyjwt==2.8.0 \
 mysqlclient==2.1.1 \
 django==3.2.24 \