diff --git a/.changeset/rude-onions-draw.md b/.changeset/rude-onions-draw.md
new file mode 100644
index 0000000000..ccc0040fb8
--- /dev/null
+++ b/.changeset/rude-onions-draw.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Fixed websocket ping request not conforming to jsonrpc schema.
diff --git a/src/utils/rpc/webSocket.ts b/src/utils/rpc/webSocket.ts
index e83faa3488..f63e84d34b 100644
--- a/src/utils/rpc/webSocket.ts
+++ b/src/utils/rpc/webSocket.ts
@@ -4,6 +4,7 @@ import {
   SocketClosedError,
   WebSocketRequestError,
 } from '../../errors/request.js'
+import type { RpcRequest } from '../../types/rpc.js'
 import {
   type GetSocketRpcClientParameters,
   type Socket,
@@ -71,7 +72,12 @@ export async function getWebSocketRpcClient(
                 cause: new SocketClosedError({ url: socket.url }),
               })
 
-            socket.send('net_version')
+            const body: RpcRequest = {
+              jsonrpc: '2.0',
+              method: 'net_version',
+              params: [],
+            }
+            socket.send(JSON.stringify(body))
           } catch (error) {
             onError(error as Error)
           }