diff --git a/examples/0_basic/0_create_did.rs b/examples/0_basic/0_create_did.rs
index 1544860594..ff89818b7f 100644
--- a/examples/0_basic/0_create_did.rs
+++ b/examples/0_basic/0_create_did.rs
@@ -42,14 +42,14 @@ async fn main() -> anyhow::Result<()> {
     .await?;
 
   // Create a new secret manager backed by a Stronghold.
-  let mut secret_manager: SecretManager = SecretManager::Stronghold(
+  let secret_manager: SecretManager = SecretManager::Stronghold(
     StrongholdSecretManager::builder()
       .password(Password::from("secure_password".to_owned()))
       .build(random_stronghold_path())?,
   );
 
   // Get an address with funds for testing.
-  let address: Address = get_address_with_funds(&client, &mut secret_manager, faucet_endpoint).await?;
+  let address: Address = get_address_with_funds(&client, &secret_manager, faucet_endpoint).await?;
 
   // Get the Bech32 human-readable part (HRP) of the network.
   let network_name: NetworkName = client.network_name().await?;
diff --git a/examples/0_basic/8_stronghold.rs b/examples/0_basic/8_stronghold.rs
index 5b2f9574ad..6dd8fa7cb5 100644
--- a/examples/0_basic/8_stronghold.rs
+++ b/examples/0_basic/8_stronghold.rs
@@ -1,9 +1,6 @@
 // Copyright 2020-2023 IOTA Stiftung
 // SPDX-License-Identifier: Apache-2.0
 
-use std::ops::Deref;
-use std::ops::DerefMut;
-
 use examples::get_address_with_funds;
 use examples::random_stronghold_path;
 use identity_iota::credential::Jws;
@@ -27,6 +24,7 @@ use iota_sdk::client::Client;
 use iota_sdk::client::Password;
 use iota_sdk::types::block::address::Address;
 use iota_sdk::types::block::output::AliasOutput;
+use std::ops::Deref;
 
 /// Demonstrates how to use stronghold for secure storage.
 #[tokio::main]
diff --git a/examples/1_advanced/2_nft_owns_did.rs b/examples/1_advanced/2_nft_owns_did.rs
index faa9e27eee..435964097c 100644
--- a/examples/1_advanced/2_nft_owns_did.rs
+++ b/examples/1_advanced/2_nft_owns_did.rs
@@ -50,14 +50,14 @@ async fn main() -> anyhow::Result<()> {
     .await?;
 
   // Create a new secret manager backed by a Stronghold.
-  let mut secret_manager: SecretManager = SecretManager::Stronghold(
+  let secret_manager: SecretManager = SecretManager::Stronghold(
     StrongholdSecretManager::builder()
       .password(Password::from("secure_password".to_owned()))
       .build(random_stronghold_path())?,
   );
 
   // Get an address with funds for testing.
-  let address: Address = get_address_with_funds(&client, &mut secret_manager, FAUCET_ENDPOINT).await?;
+  let address: Address = get_address_with_funds(&client, &secret_manager, FAUCET_ENDPOINT).await?;
 
   // Get the current byte cost.
   let rent_structure: RentStructure = client.get_rent_structure().await?;
diff --git a/identity_storage/src/secret_manager_wrapper.rs b/identity_storage/src/secret_manager_wrapper.rs
index 0af0a4a02e..13affbb124 100644
--- a/identity_storage/src/secret_manager_wrapper.rs
+++ b/identity_storage/src/secret_manager_wrapper.rs
@@ -1,11 +1,10 @@
 // Copyright 2020-2023 IOTA Stiftung
 // SPDX-License-Identifier: Apache-2.0
 
-use std::sync::Arc;
-
 use iota_sdk::client::secret::stronghold::StrongholdSecretManager;
 use iota_sdk::client::secret::SecretManager;
 use iota_stronghold::Stronghold;
+use std::sync::Arc;
 use tokio::sync::MutexGuard;
 
 /// Wrapper around `SecretManager` that implements the storage interfaces.