diff --git a/README.md b/README.md
index 4a4b025..36fba14 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # argh net
 
-> **WARNING**  
+> [!WARNING]  
 > This project is in an **EXPERIMENTAL** stage where things change all the time. Do not use (yet).
 
 This project aims to develop a specification and software suite for the easy creation of distributed networks on top of websockets, specifically for **broadcasting** text messages.
@@ -9,5 +9,5 @@ The goal of this implementation is not to be very efficient or sophisticated, bu
 
 See [SPEC.md](./SPEC.md) for the specification.
 
-> **NOTE**  
+> [!IMPORTANT]  
 > The specification and implementation are not always updated at the same time and may therefore be out of sync.
diff --git a/SPEC.md b/SPEC.md
index 4c0ca5b..b98e6fd 100644
--- a/SPEC.md
+++ b/SPEC.md
@@ -44,7 +44,7 @@ All connections are using unencrypted (TODO) websockets as the underlying networ
 
 ## Packet Structure
 
-> **NOTE**  
+> [!IMPORTANT]  
 > Not yet implemented.
 
 A complete packet is a [MessagePack](https://msgpack.org/)-encoded dictionary with the following fields: