diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 1e7cb198..c1491541 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -19,3 +19,4 @@ documentation, or testing:
 - Stelios Tymvios (namedLambda)
 - Spyros Vlachos (devspyrosv)
 - Joe Roberts (jjroberts)
+- sigma67