diff --git a/README.md b/README.md
index 3ef0129..117be58 100644
--- a/README.md
+++ b/README.md
@@ -641,7 +641,7 @@ With Homebrew Postgres, you can use:
 brew install pgvector
 ```
 
-Note: This only adds it to the `postgresql@16` formula
+Note: This adds it to the `postgresql@16` and `postgresql@15` formulas
 
 ### PGXN