diff --git a/systems/sTeX.md b/systems/sTeX.md
index cfadfcc9f33e5b863093ae3bc85dde17f11dcd1a..e1794d25719ac2b7040b231bd22ebe36ee458846 100644
--- a/systems/sTeX.md
+++ b/systems/sTeX.md
@@ -8,6 +8,7 @@ start_date: 2004-09
 people: 
     - mkohlhase
     - dginev
+    - twiesing
 
 supported-by:
     - sissi