diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3a846defa..1f1434de4 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -113,6 +113,7 @@ Micro-optimizations try to improve the performance of an application by replacin
 * replace `Vector3.Distance(a,b) < K` with `Vector3.SqrMagnitude(b - a) < K * K`
 * convert a class to struct
 * manually inlining small functions
+* rewriting a function in native code
 
 Macro-optimizations try to improve the performance of an application by changing the algorithm.  Some examples include:
 * Serialize a message once O(1),  instead of for every single client O(n)