diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 9a8cc2e2..6e9ae362 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -19,6 +19,7 @@ Keir Mierle <mierle@gmail.com>
 Keith Ray <keith.ray@gmail.com>
 Kostya Serebryany <kcc@google.com>
 Lev Makhlis
+Manuel Klimek <klimek@google.com>
 Mario Tanev <radix@google.com>
 Mark Paskin
 Markus Heule <markus.heule@gmail.com>