diff --git a/system-actors/src/env/mod.rs b/system-actors/src/env/mod.rs
index 2b2f660..df6ce75 100644
--- a/system-actors/src/env/mod.rs
+++ b/system-actors/src/env/mod.rs
@@ -274,3 +274,12 @@ pub struct GetStartupProofRequest;
 #[doc(hidden)]
 #[derive(Debug, Clone, Serialize, Deserialize, TypeId)]
 pub struct GetStartupProofResponse(pub Option<String>);
+
+#[doc(hidden)]
+#[derive(Debug, Clone, Serialize, Deserialize, TypeId, Priced)]
+#[price(10000)]
+pub struct GetNetworkRequest;
+
+#[doc(hidden)]
+#[derive(Debug, Clone, Serialize, Deserialize, TypeId)]
+pub struct GetNetworkResponse(pub String);