diff --git a/README.md b/README.md
index 99fea21..e64e3ac 100644
--- a/README.md
+++ b/README.md
@@ -12,3 +12,7 @@ To work properly _Labcontrol_ requires a file named `labcontrol.json` + the fold
 
 Receipt creation requires at least one receipt template in `/usr/local/share/labcontrol`. The name of the header file should match the pattern `NAMETHEHEADERSHALLHAVE_header.tex` to be recognized.
 
+## contributors
+* original developer: (https://github.com/markuspg)[Markus Prasser]
+* former contributor: (https://github.com/tobiasweede)[Tobias Weiss]
+* current freebsd fork maintainer: (https://git.floating-in.space/isabell)[Isabell Pflug]