diff --git a/publish/Dockerfile b/publish/Dockerfile
index 4bb6e68..78af2b1 100644
--- a/publish/Dockerfile
+++ b/publish/Dockerfile
@@ -1,4 +1,4 @@
-FROM jekyll/jekyll
+FROM jekyll/jekyll:4.2.0
 Label MAINTAINER Amir Pourmand
 WORKDIR /srv/jekyll/
 ADD Gemfile /srv/jekyll/