diff --git a/config/index.md b/config/index.md
index a61b5f51..96cbad00 100644
--- a/config/index.md
+++ b/config/index.md
@@ -491,6 +491,10 @@ Silent console output from tests
 
 Path to setup files. They will be run before each test file.
 
+:::info
+Changing setup files will trigger rerun of all tests.
+:::
+
 You can use `process.env.VITEST_POOL_ID` (integer-like string) inside to distinguish between threads (will always be `'1'`, if run with `threads: false`).
 
 :::tip