diff --git a/hugin/Dockerfile b/hugin/Dockerfile
index 6b4c6b1..1cb422d 100644
--- a/hugin/Dockerfile
+++ b/hugin/Dockerfile
@@ -1,10 +1,10 @@
-FROM debian:jessie
+FROM debian:bullseye
 LABEL maintainer="Johannes Schickling <schickling.j@gmail.com>"
 
 ENV DEBIAN_FRONTEND noninteractive
 
 ADD install.sh install.sh
-RUN sh install.sh && rm install.sh
+RUN bash install.sh && rm install.sh
 
 VOLUME ["/source"]
 WORKDIR /source