diff --git a/README.md b/README.md
index 648fef4..a3961ed 100644
--- a/README.md
+++ b/README.md
@@ -69,11 +69,10 @@ $ PRODUCTION=true HOSTS="host1:host2:host3" DURATION=1s MAP_STRING_INT=k1:1,k2:2
 
 ## Caveats
 
-> **Warning**
->
-> **This is important!**
+> [!CAUTION]
 >
-> _Unexported fields_ are **ignored**. This is as intended and will not change.
+> _Unexported fields_ will be **ignored** by `env`.
+> This is by design and will not change.
 
 ## Supported types and defaults