diff --git a/crates/uniffi/uniffi_SPLIT_ME/src/system/sargon_os/transactions/mod.rs b/crates/uniffi/uniffi_SPLIT_ME/src/system/sargon_os/transactions/mod.rs
index 58bcdad43..23e0e60d1 100644
--- a/crates/uniffi/uniffi_SPLIT_ME/src/system/sargon_os/transactions/mod.rs
+++ b/crates/uniffi/uniffi_SPLIT_ME/src/system/sargon_os/transactions/mod.rs
@@ -1,9 +1,13 @@
+mod sargon_os_subintent_manifest_modify;
 mod sargon_os_transaction_analysis;
+mod sargon_os_transaction_manifest_modify;
 mod sargon_os_transaction_status;
 mod sargon_os_transaction_submit;
 mod support;
 
+pub use sargon_os_subintent_manifest_modify::*;
 pub use sargon_os_transaction_analysis::*;
+pub use sargon_os_transaction_manifest_modify::*;
 pub use sargon_os_transaction_status::*;
 pub use sargon_os_transaction_submit::*;
 pub use support::*;
diff --git a/crates/uniffi/uniffi_SPLIT_ME/src/system/sargon_os/transactions/sargon_os_subintent_manifest_modify.rs b/crates/uniffi/uniffi_SPLIT_ME/src/system/sargon_os/transactions/sargon_os_subintent_manifest_modify.rs
new file mode 100644
index 000000000..7109721ae
--- /dev/null
+++ b/crates/uniffi/uniffi_SPLIT_ME/src/system/sargon_os/transactions/sargon_os_subintent_manifest_modify.rs
@@ -0,0 +1,18 @@
+use crate::prelude::*;
+use sargon::SargonOsSubintentManifestModify;
+
+#[uniffi::export]
+impl SargonOS {
+    pub async fn modify_subintent_manifest(
+        &self,
+        subintent_manifest: SubintentManifest,
+        guarantees: Vec<TransactionGuarantee>,
+    ) -> Result<SubintentManifest> {
+        self.wrapped
+            .modify_subintent_manifest(
+                subintent_manifest.into_internal(),
+                guarantees.iter().map(|g| g.into_internal()),
+            )
+            .into_result()
+    }
+}
diff --git a/crates/uniffi/uniffi_SPLIT_ME/src/system/sargon_os/transactions/sargon_os_transaction_manifest_modify.rs b/crates/uniffi/uniffi_SPLIT_ME/src/system/sargon_os/transactions/sargon_os_transaction_manifest_modify.rs
new file mode 100644
index 000000000..eb6004470
--- /dev/null
+++ b/crates/uniffi/uniffi_SPLIT_ME/src/system/sargon_os/transactions/sargon_os_transaction_manifest_modify.rs
@@ -0,0 +1,22 @@
+use crate::prelude::*;
+use sargon::SargonOsTransactionManifestModify;
+
+#[uniffi::export]
+impl SargonOS {
+    pub async fn modify_transaction_manifest(
+        &self,
+        transaction_manifest: TransactionManifest,
+        fee_payer_address: AccountAddress,
+        fee: Decimal192,
+        guarantees: Vec<TransactionGuarantee>,
+    ) -> Result<TransactionManifest> {
+        self.wrapped
+            .modify_transaction_manifest(
+                transaction_manifest.into_internal(),
+                fee_payer_address.into_internal(),
+                fee.into_internal(),
+                guarantees.iter().map(|g| g.into_internal()),
+            )
+            .into_result()
+    }
+}