diff --git a/README.md b/README.md
index a077e74..ae064c4 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 chroprof - Profiling for [Chronos](https://github.com/status-im/nim-chronos)
 ============================================================================
 
-This repo contains a usable profiler for [Chronos](https://github.com/status-im/nim-chronos). For the time being, it requires [a modified version of Chronos V4](https://github.com/codex-storage/nim-chronos/tree/feature/profiler-v4) which has profiling hooks enabled.
+This repo contains a usable profiler for [Chronos](https://github.com/status-im/nim-chronos). For the time being, it requires [a modified version of Chronos V4](https://github.com/codex-storage/nim-chronos/tree/feature/profiler-v4) which has profiling hooks enabled. Some of the rationale for the design and implementation of the profiler [can be found here](https://hackmd.io/eQ_ouNV4QZe0TG334_gkFg).
 
 1. [Enabling profiling](#enabling-profiling)
 2. [Looking at metrics](#looking-at-metrics)