diff --git a/packages/server-sdk/src/client.ts b/packages/server-sdk/src/client.ts
index 068b348b2..6ef0a49c6 100644
--- a/packages/server-sdk/src/client.ts
+++ b/packages/server-sdk/src/client.ts
@@ -52,6 +52,12 @@ export class Client<C = undefined> {
       }
     })
 
+    this.onEvent('error', async (event) => {
+      if (event.data.message === 'not authenticated') {
+        await this._reconnectDueToUnauthorized()
+      }
+    })
+
     if (this.opts.autoConnect) {
       void this.connect()
     }
@@ -265,4 +271,17 @@ export class Client<C = undefined> {
       this.connected = false
     }
   }
+
+  private async _reconnectDueToUnauthorized() {
+    if (this.shouldClose)
+      return
+
+    const ws = this.websocket
+    this.connected = false
+    if (ws && ws.readyState !== WebSocket.CLOSED && ws.readyState !== WebSocket.CLOSING) {
+      ws.close()
+    }
+
+    await this.connect()
+  }
 }