diff --git a/examples/walkthrough.md b/examples/walkthrough.md
index d4df03d..3dad9eb 100644
--- a/examples/walkthrough.md
+++ b/examples/walkthrough.md
@@ -30,21 +30,19 @@ Each section builds on the previous one, gradually increasing in complexity.
 
 ### System Components
 
-```
-┌─────────────────────────────────────────────────────────────────┐
-│                     NATSBridge Architecture                     │
-├─────────────────────────────────────────────────────────────────┤
-│  ┌──────────────┐    ┌──────────────┐                           │
-│  │   Julia      │    │  NATS         │                          │
-│  │  (NATS.jl)   │◄──►│  Server       │                          │
-│  └──────────────┘    └──────────────┘                           │
-│         │                      │                                │
-│         ▼                      ▼                                │
-│      ┌──────────────────────────────────────┐                   │
-│      │          File Server                  │                  │
-│      │         (HTTP Upload)                 │                  │
-│      └──────────────────────────────────────┘                   │
-└─────────────────────────────────────────────────────────────────┘
+```mermaid
+flowchart TB
+    subgraph NATSBridge_Architecture["NATSBridge Architecture"]
+        direction TB
+        
+        Julia["Julia (NATS.jl)"]
+        NATS["NATS Server"]
+        FileServer["File Server<br/>(HTTP Upload)"]
+        
+        Julia <--> NATS
+        Julia --> FileServer
+        NATS --> FileServer
+    end
 ```
 
 ### Message Flow