diff --git a/AUTHORS.md b/AUTHORS.md
index fdfb351..8623d69 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -1,25 +1,26 @@
 pyMBE is maintained and developed by several authors from different institutions in collaboration.
-The following people have contributed to pyMBE:
+The following people have contributed to pyMBE (Github username, Name, current affiliation):
 
 ## Admins
-- Pablo M. Blanco (Norwegian University of Science and Tecnology, Norway)
-- Jean-Noël Grad (University of Stuttgart, Germany)
-- Peter Košovan (Charles University, Czech Republic)
+- jngrad, Jean-Noël Grad (University of Stuttgart, Germany)
+- kosovan, Peter Košovan (Charles University, Czech Republic)
+- pm-blanco, Pablo M. Blanco (Norwegian University of Science and Tecnology, Norway)
 
-## Core developers
-- David Beyer (University of Stuttgart, Germany)
-- Sebastian P. Pineda (Charles University, Czech Republic)
-- Paola B. Torres (Universidad Tecnológica Nacional, Argentina)
+## Tier-0 Contributors
+- davidbbeyer, David Beyer (University of Stuttgart, Germany)
+- paobtorres, Paola B. Torres (Universidad Tecnológica Nacional, Argentina)
+- pinedaps, Sebastian P. Pineda (Charles University, Czech Republic)
 
-## Contributors
-- Marius Aarsten (Norwegian University of Science and Tecnology, Norway)
-- Claudio F. Narambuena (Universidad Tecnológica Nacional, Argentina)
+## Tier-1 Contributors
+- amartise, Albert Martinez-Serra (Royal College of Surgeons, Ireland) 
+- mariusaarsten, Marius Aarsten (Norwegian University of Science and Tecnology, Norway)
+- Zitzeronion, Stefan Zitz (Research Center Pharmaceutical Engineering, Austria)
 
 ## Early testers of the library
+- Claudio F. Narambuena (Universidad Tecnológica Nacional, Argentina)
 - Corinna Dannert (Norwegian University of Science and Technology, Norway)
-- Rita S. Dias (Norwegian University of Science and Technology, Norway)
-- Sergio Madurga (University of Barcelona, Spain)
-- Albert Martinez-Serra (Royal College of Surgeons, Ireland)
 - Francesc Mas (University of Barcelona, Spain)
 - Magdaléna Nejedlá (Charles University, Czech Republic)
 - Raju Lunkad (University of Goettingen, Germany)
+- Rita S. Dias (Norwegian University of Science and Technology, Norway)
+- Sergio Madurga (University of Barcelona, Spain)