Update contributors (#381)

diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 89da0dd..fde01d5 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -16,7 +16,7 @@
 - Felix Cheung
 - Furkan Kamaci
 - Jianyong Dai
-- Luciano Resende
+- Luciano Resende (Retired)
 - Matt Sicker
 - Zhijie Shen
 
@@ -46,6 +46,7 @@
 
 List of external contributors of Teaclave and Teaclave SGX SDK (in alphabetical order):
   - [Akhil Velagapudi](https://github.com/akhilles)
+  - [dtorfs](https://github.com/dtorfs)
   - [David Phan](https://github.com/davidp94)
   - [Elichai Turkel](https://github.com/elichai)
   - [GeminiCarrie](https://github.com/GeminiCarrie)