diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 686b645215f7..d1653611da88 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -2,3 +2,4 @@
 ## Acknowledgements
 - Thanks to bug1989 [https://github.com/bug1989] for contributing the initial quantized int8 inference code and a large variety of device benchmark
 - Thanks to zhiliu6 [https://github.com/zhiliu6] for contributing the darknet conversion tool, operators and YOLO examples
+- Thanks to Tijmen Verhulsdonck [https://github.com/Timen] for contributing the massive AVX optimization for x86 platform