diff --git a/docs/howto/transactions.md b/docs/howto/transactions.md
index 9ed61b6a4d..b317917cfd 100644
--- a/docs/howto/transactions.md
+++ b/docs/howto/transactions.md
@@ -1,6 +1,10 @@
 # Using transactions
 In the code generated by sqlc, the `WithTx` method allows a `Queries` instance to be associated with a transaction.
 
+## Locking Reads in Transactions
+
+When you query data and then update related data within the same transaction, regular `SELECT` statements may not provide adequate protection against race conditions. For MySQL/InnoDB, using `SELECT ... FOR UPDATE` provides exclusive locks on the selected rows, preventing other transactions from modifying them until your transaction completes.
+
 For example, with the following SQL structure:
 
 `schema.sql`:
@@ -15,7 +19,8 @@ CREATE TABLE records (
 ```sql
 -- name: GetRecord :one
 SELECT * FROM records
-WHERE id = $1;
+WHERE id = $1
+FOR UPDATE;
 
 -- name: UpdateRecord :exec
 UPDATE records SET counter = $2