diff --git a/Dockerfile b/Dockerfile
index f83eff9..1d8b52e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,9 @@
 FROM centos:7
 
+ENV DEFAULT_EMBY_VERSION 3.5.2.0
+
 RUN set -ex; \
-yum install -y https://github.com/MediaBrowser/Emby.Releases/releases/download/3.5.2.0/emby-server-rpm_3.5.2.0_x86_64.rpm; \
+yum install -y https://github.com/MediaBrowser/Emby.Releases/releases/download/${EMBY_VERSION:-${DEFAULT_EMBY_VERSION}}/emby-server-rpm_${EMBY_VERSION:-${DEFAULT_EMBY_VERSION}}_x86_64.rpm; \
 yum clean all; \
 rm -rf /var/cache/yum; \
 rm -rf /tmp/*