diff --git a/slack/Dockerfile b/slack/Dockerfile
index 75e9388..eed4ea9 100644
--- a/slack/Dockerfile
+++ b/slack/Dockerfile
@@ -14,7 +14,7 @@
 #	--name slack \
 #	jess/slack "$@"
 
-FROM debian:jessie
+FROM debian:jessie-slim
 LABEL maintainer "Jessie Frazelle <jess@linux.com>"
 
 ENV LC_ALL en_US.UTF-8