diff --git a/crates/drift-ffi-sys b/crates/drift-ffi-sys
index 719a0f9..e89bb91 160000
--- a/crates/drift-ffi-sys
+++ b/crates/drift-ffi-sys
@@ -1 +1 @@
-Subproject commit 719a0f9511a5bb49228841ff1e3c500025dfcc40
+Subproject commit e89bb91e86b506c909b953f820d157fa1b5b0f2a
diff --git a/crates/src/drift_idl.rs b/crates/src/drift_idl.rs
index 97d721c..edcb4ab 100644
--- a/crates/src/drift_idl.rs
+++ b/crates/src/drift_idl.rs
@@ -2,6 +2,7 @@
 #![doc = r""]
 #![doc = r" Auto-generated IDL types, manual edits do not persist (see `crates/drift-idl-gen`)"]
 #![doc = r""]
+use self::traits::ToAccountMetas;
 use anchor_lang::{
     prelude::{
         account,
@@ -12,8 +13,6 @@ use anchor_lang::{
 };
 use serde::{Deserialize, Serialize};
 use solana_sdk::{instruction::AccountMeta, pubkey::Pubkey};
-
-use self::traits::ToAccountMetas;
 pub mod traits {
     use solana_sdk::instruction::AccountMeta;
     #[doc = r" This is distinct from the anchor_lang version of the trait"]
@@ -1891,9 +1890,8 @@ pub mod instructions {
 }
 pub mod types {
     #![doc = r" IDL types"]
-    use std::ops::Mul;
-
     use super::*;
+    use std::ops::Mul;
     #[doc = ""]
     #[doc = " backwards compatible u128 deserializing data from rust <=1.76.0 when u/i128 was 8-byte aligned"]
     #[doc = " https://solana.stackexchange.com/questions/7720/using-u128-without-sacrificing-alignment-8"]
diff --git a/crates/src/slot_subscriber.rs b/crates/src/slot_subscriber.rs
index c4b3f19..aaa3401 100644
--- a/crates/src/slot_subscriber.rs
+++ b/crates/src/slot_subscriber.rs
@@ -46,7 +46,7 @@ impl SlotSubscriber {
         *slot_guard
     }
 
-    pub async fn subscribe<F>(&mut self, handler_fn: F) -> SdkResult<()>
+    pub async fn subscribe<F>(&self, handler_fn: F) -> SdkResult<()>
     where
         F: 'static + Send + Fn(SlotUpdate),
     {
@@ -57,7 +57,7 @@ impl SlotSubscriber {
         Ok(())
     }
 
-    async fn subscribe_ws<F>(&mut self, handler_fn: F) -> SdkResult<()>
+    async fn subscribe_ws<F>(&self, handler_fn: F) -> SdkResult<()>
     where
         F: 'static + Send + Fn(SlotUpdate),
     {