diff --git a/README.md b/README.md
index dc609de1..f8a7c958 100644
--- a/README.md
+++ b/README.md
@@ -74,8 +74,10 @@ change primary key values.
 		specify multiple columns.
 
 	[--precise]
-		Force the use of PHP (instead of SQL) which is more thorough,
-		but slower.
+		Force the use of PHP (instead of SQL) for all columns. By default, the command
+		uses fast SQL queries, but automatically switches to PHP for columns containing
+		serialized data. Use this flag to ensure PHP processes all columns, which is
+		slower but handles complex serialized data structures more reliably.
 
 	[--recurse-objects]
 		Enable recursing into objects to replace strings. Defaults to true;
@@ -139,6 +141,9 @@ change primary key values.
     # Search/replace to a SQL file without transforming the database
     $ wp search-replace foo bar --export=database.sql
 
+    # Use precise mode for complex serialized data
+    $ wp search-replace 'oldurl.com' 'newurl.com' --precise
+
     # Bash script: Search/replace production to development url (multisite compatible)
     #!/bin/bash
     if $(wp --url=http://example.com core is-installed --network); then