diff --git a/README.md b/README.md
index 5186613..fd6f4b7 100644
--- a/README.md
+++ b/README.md
@@ -117,9 +117,11 @@ You will find the channel here: https://t.me/buanet_tutorials
 
 ## Changelog
 
-### v4.1.3beta (2020-02-08)
-* added new ENVs for "iobroker setup custom"
-* enhancements in startupscript logging
+### v4.1.4beta (2020-04-06)
+* optimizing installation of packages
+* v4.1.3beta (2020-02-08)
+  * added new ENVs for "iobroker setup custom"
+  * enhancements in startupscript logging
 * v4.1.2beta (2020-02-02)
   * added feature userscripts on startup
   * small fix for permissions issues on some systems
diff --git a/amd64/Dockerfile b/amd64/Dockerfile
index 681d39d..0b84f1a 100644
--- a/amd64/Dockerfile
+++ b/amd64/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:stretch
+FROM amd64/debian:buster
 
 LABEL maintainer="Andre Germann" \
       url="<https://buanet.de>"