diff --git a/README.md b/README.md
index 00cd605..cfd220f 100644
--- a/README.md
+++ b/README.md
@@ -60,3 +60,8 @@ See `docker run --rm psitrax/powerdns --help`
 ## Maintainer
 
 * Christoph Wiechert <wio@psitrax.de>
+
+### Credits
+
+* Mathias Kaufmann <me@stei.gr>: Reduced image size
+