diff --git a/Dockerfile b/Dockerfile
index e8fd836..3cfc4fc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,7 +19,7 @@ ARG SERVICE_PORT=""
 ARG EXPOSE_PORTS="1-65535"
 
 ARG USER="root"
-ARG DISTRO_VERSION="${IMAGE_VERSION}"
+ARG DISTRO_VERSION="bullseye"
 ARG BUILD_VERSION="${DISTRO_VERSION}"
 
 FROM tianon/gosu:latest AS gosu