diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 1371aedb..874ee668 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -267,6 +267,7 @@ video tutorials.
  - Samuli Tuomola
  - Matthew Turner
  - urraka
+ - Mark Valkin
  - Elias Vanderstuyft
  - Stef Velzel
  - Jari Vetoniemi