diff --git a/README.md b/README.md
index 9f3e8e6..1b8a5df 100644
--- a/README.md
+++ b/README.md
@@ -254,13 +254,17 @@ BIN_APP_PATH := "/usr/local/bin"
 
 ### For tests
 
+> [!NOTE]
+> The logger can only be initialized once per process<br>
+> Test by default runs in parallel
+
+> [!IMPORTANT] 
+> test use **--features test-sync** to run thread safe
+
 ```rust
 cargo test --features test-sync 
 ```
 
-> [!NOTE]
-> The logger can only be initialized once per process<br>
-> Test by default runs in parallel
 
 Use **--nocapture** to see the output even when tests pass