diff --git a/docs/API.md b/docs/API.md
index d2a82f42..05343235 100644
--- a/docs/API.md
+++ b/docs/API.md
@@ -34,6 +34,7 @@ The `g3log` logger is thread-safe, meaning it can be used from multiple threads
 The `g3log` code is released into the public domain, allowing users to use, modify, and distribute it freely without restrictions.
 
 ## Logging and Fatal Events Explained
+_diagrams created with https://mermaid.live_
 ![G3Log sequence view](event_sequence.png)