diff --git a/crates/starknet-types-rpc/src/v0_7_1/starknet_api_openrpc.rs b/crates/starknet-types-rpc/src/v0_7_1/starknet_api_openrpc.rs
index 5005054..58e4a97 100644
--- a/crates/starknet-types-rpc/src/v0_7_1/starknet_api_openrpc.rs
+++ b/crates/starknet-types-rpc/src/v0_7_1/starknet_api_openrpc.rs
@@ -12,9 +12,9 @@ use super::{BlockId, BroadcastedDeclareTxn, BroadcastedDeployAccountTxn, Broadca
 use crate::custom_serde::NumAsHex;
 use alloc::string::String;
 use alloc::vec::Vec;
+use core::marker::PhantomData;
 use serde::ser::SerializeMap;
 use serde::{Deserialize, Serialize};
-use std::marker::PhantomData;
 
 pub type Address<F> = F;
 
diff --git a/crates/starknet-types-rpc/src/v0_7_1/starknet_api_openrpc.toml b/crates/starknet-types-rpc/src/v0_7_1/starknet_api_openrpc.toml
index e7e4c97..7851f0c 100644
--- a/crates/starknet-types-rpc/src/v0_7_1/starknet_api_openrpc.toml
+++ b/crates/starknet-types-rpc/src/v0_7_1/starknet_api_openrpc.toml
@@ -7,7 +7,7 @@ additional-imports = [
     "super::{BlockId, BroadcastedDeclareTxn, BroadcastedDeployAccountTxn, BroadcastedInvokeTxn}",
     "alloc::vec::Vec",
     "alloc::string::String",
-    "std::marker::PhantomData"
+    "core::marker::PhantomData"
 ]
 method-name-prefix = "starknet_"
 param-types = true
diff --git a/crates/starknet-types-rpc/src/v0_7_1/starknet_trace_api_openrpc.rs b/crates/starknet-types-rpc/src/v0_7_1/starknet_trace_api_openrpc.rs
index 2394836..6d9cde4 100644
--- a/crates/starknet-types-rpc/src/v0_7_1/starknet_trace_api_openrpc.rs
+++ b/crates/starknet-types-rpc/src/v0_7_1/starknet_trace_api_openrpc.rs
@@ -14,9 +14,9 @@ use super::{
 };
 use alloc::string::String;
 use alloc::vec::Vec;
+use core::marker::PhantomData;
 use serde::ser::SerializeMap;
 use serde::{Deserialize, Serialize};
-use std::marker::PhantomData;
 
 #[derive(Eq, Hash, PartialEq, Serialize, Deserialize, Clone, Debug)]
 pub enum CallType {
diff --git a/crates/starknet-types-rpc/src/v0_7_1/starknet_trace_api_openrpc.toml b/crates/starknet-types-rpc/src/v0_7_1/starknet_trace_api_openrpc.toml
index 582891c..b670eb5 100644
--- a/crates/starknet-types-rpc/src/v0_7_1/starknet_trace_api_openrpc.toml
+++ b/crates/starknet-types-rpc/src/v0_7_1/starknet_trace_api_openrpc.toml
@@ -6,7 +6,7 @@ additional-imports = [
     "super::{FunctionCall, Event, MsgToL1, BlockId, FeeEstimate, BroadcastedTxn, StateDiff, TxnHash, ExecutionResources, ComputationResources}",
     "alloc::vec::Vec",
     "alloc::string::String",
-    "std::marker::PhantomData"
+    "core::marker::PhantomData"
 ]
 method-name-prefix = "starknet_"
 param-types = true
diff --git a/crates/starknet-types-rpc/src/v0_7_1/starknet_write_api.rs b/crates/starknet-types-rpc/src/v0_7_1/starknet_write_api.rs
index cfc40a6..e379d57 100644
--- a/crates/starknet-types-rpc/src/v0_7_1/starknet_write_api.rs
+++ b/crates/starknet-types-rpc/src/v0_7_1/starknet_write_api.rs
@@ -9,9 +9,9 @@
 //
 
 use super::{BroadcastedDeclareTxn, BroadcastedDeployAccountTxn, BroadcastedInvokeTxn, TxnHash};
+use core::marker::PhantomData;
 use serde::ser::SerializeMap;
 use serde::{Deserialize, Serialize};
-use std::marker::PhantomData;
 
 #[derive(Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize)]
 pub struct ClassAndTxnHash<F> {
diff --git a/crates/starknet-types-rpc/src/v0_7_1/starknet_write_api.toml b/crates/starknet-types-rpc/src/v0_7_1/starknet_write_api.toml
index a38e4dc..486146c 100644
--- a/crates/starknet-types-rpc/src/v0_7_1/starknet_write_api.toml
+++ b/crates/starknet-types-rpc/src/v0_7_1/starknet_write_api.toml
@@ -4,7 +4,7 @@ run-rustfmt = true
 [generation]
 additional-imports = [
     "super::{BroadcastedDeclareTxn, BroadcastedDeployAccountTxn, BroadcastedInvokeTxn, TxnHash}",
-    "std::marker::PhantomData"
+    "core::marker::PhantomData"
 ]
 method-name-prefix = "starknet_"
 param-types = true