diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5d56869bae..d16220c52c 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -233,6 +233,7 @@ tests/
 └── load/                   # Load tests
 
 docs/
+├── adr/                     # Architecture Decision Records
 ├── architecture/            # System architecture & resilience
 ├── comparison/              # OmniRoute vs alternatives
 ├── compression/             # Compression guides & rules