diff --git a/Dockerfile b/Dockerfile
index 9840d329..d529d305 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-FROM golang:bookworm as builder
-RUN apt-get update && apt-get install -y upx-ucl
+FROM golang:bullseye as builder
+RUN apt-get update && apt-get install -y upx
 ADD . /luet
 RUN cd /luet && make build