diff --git a/beacon_node/execution_layer/src/engine_api/http.rs b/beacon_node/execution_layer/src/engine_api/http.rs
index 34b692a6271..fc0288bbc01 100644
--- a/beacon_node/execution_layer/src/engine_api/http.rs
+++ b/beacon_node/execution_layer/src/engine_api/http.rs
@@ -75,7 +75,7 @@ impl HttpJsonRpc {
             jsonrpc: JSONRPC_VERSION,
             method,
             params,
-            id: STATIC_ID,
+            id: json!(STATIC_ID),
         };
 
         let mut request = self
diff --git a/beacon_node/execution_layer/src/engine_api/json_structures.rs b/beacon_node/execution_layer/src/engine_api/json_structures.rs
index 77dc6ff4746..c95113092f9 100644
--- a/beacon_node/execution_layer/src/engine_api/json_structures.rs
+++ b/beacon_node/execution_layer/src/engine_api/json_structures.rs
@@ -8,7 +8,7 @@ pub struct JsonRequestBody<'a> {
     pub jsonrpc: &'a str,
     pub method: &'a str,
     pub params: serde_json::Value,
-    pub id: u32,
+    pub id: serde_json::Value,
 }
 
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
@@ -25,7 +25,7 @@ pub struct JsonResponseBody {
     pub error: Option<JsonError>,
     #[serde(default)]
     pub result: serde_json::Value,
-    pub id: u32,
+    pub id: serde_json::Value,
 }
 
 #[derive(Debug, PartialEq, Serialize, Deserialize)]