diff --git a/README.md b/README.md
index 7f0e874..7b7e1ad 100644
--- a/README.md
+++ b/README.md
@@ -428,6 +428,12 @@ Add any indexes *after* loading the initial data for best performance.
 
 See index build time for [HNSW](#index-build-time) and [IVFFlat](#index-build-time-1).
 
+In production environments, create indexes concurrently to avoid blocking writes.
+
+```sql
+CREATE INDEX CONCURRENTLY ...
+```
+
 ### Querying
 
 Use `EXPLAIN ANALYZE` to debug performance.