diff --git a/crates/iota-sdk-crypto/src/multisig.rs b/crates/iota-sdk-crypto/src/multisig.rs
index f4a426ca1..9d90fe2ad 100644
--- a/crates/iota-sdk-crypto/src/multisig.rs
+++ b/crates/iota-sdk-crypto/src/multisig.rs
@@ -247,6 +247,7 @@ impl Verifier<UserSignature> for UserSignatureVerifier {
             UserSignature::Passkey(passkey_authenticator) => {
                 crate::passkey::PasskeyVerifier::default().verify(message, passkey_authenticator)
             }
+            _ => Err(SignatureError::from_source("unknown signature scheme")),
         }
     }
 }
@@ -391,9 +392,9 @@ fn multisig_pubkey_and_signature_from_user_signature(
                 MultisigMemberSignature::ZkLogin(zklogin_authenticator),
             ))
         }
-
         UserSignature::Multisig(_) | UserSignature::Passkey(_) => {
             Err(SignatureError::from_source("invalid signature scheme"))
         }
+        _ => Err(SignatureError::from_source("unknown signature scheme")),
     }
 }
diff --git a/crates/iota-sdk-crypto/src/simple.rs b/crates/iota-sdk-crypto/src/simple.rs
index e862c42eb..91d5fd667 100644
--- a/crates/iota-sdk-crypto/src/simple.rs
+++ b/crates/iota-sdk-crypto/src/simple.rs
@@ -49,6 +49,7 @@ impl Verifier<SimpleSignature> for SimpleVerifier {
             SimpleSignature::Secp256r1 { .. } => Err(SignatureError::from_source(
                 "support for secp256r1 is not enabled",
             )),
+            _ => Err(SignatureError::from_source("unknown signature scheme")),
         }
     }
 }
diff --git a/crates/iota-sdk-crypto/src/zklogin/verify.rs b/crates/iota-sdk-crypto/src/zklogin/verify.rs
index f3ef19f13..5839bb56e 100644
--- a/crates/iota-sdk-crypto/src/zklogin/verify.rs
+++ b/crates/iota-sdk-crypto/src/zklogin/verify.rs
@@ -287,7 +287,7 @@ fn zklogin_proof_to_arkworks(
 
 /// Given a SimpleSignature convert the corresponding public key, prefixed with
 /// the signature scheme flag, to two Bn254Frs
-pub fn public_key_to_frs(signature: &SimpleSignature) -> (Fr, Fr) {
+fn public_key_to_frs(signature: &SimpleSignature) -> Result<(Fr, Fr), SignatureError> {
     // buf length of the longest public key secp256r1/secp256k1 of 33 bytes plus 1
     // byte for the scheme
     let mut buf = [0u8; 34];
@@ -307,6 +307,7 @@ pub fn public_key_to_frs(signature: &SimpleSignature) -> (Fr, Fr) {
             buf[1..Secp256r1PublicKey::LENGTH + 1].copy_from_slice(public_key.inner());
             &buf[..Secp256r1PublicKey::LENGTH + 1]
         }
+        _ => return Err(SignatureError::from_source("unknown signature scheme")),
     };
 
     // TODO this comment is wrong...
@@ -317,7 +318,8 @@ pub fn public_key_to_frs(signature: &SimpleSignature) -> (Fr, Fr) {
 
     let eph_public_key_0 = Fr::from_be_bytes_mod_order(first_half);
     let eph_public_key_1 = Fr::from_be_bytes_mod_order(second_half);
-    (eph_public_key_0, eph_public_key_1)
+
+    Ok((eph_public_key_0, eph_public_key_1))
 }
 
 pub(crate) type U256 = bnum::BUintD8<32>;
@@ -441,7 +443,7 @@ pub fn calculate_all_inputs_hash(
         return Err(SignatureError::from_source("header too long"));
     }
 
-    let (first, second) = public_key_to_frs(signature);
+    let (first, second) = public_key_to_frs(signature)?;
 
     let address_seed = bn254_to_fr(inputs.address_seed());
     let max_epoch_f = Fr::from_be_bytes_mod_order(U256::from(max_epoch).to_be().digits());
@@ -596,7 +598,7 @@ mod tests {
             signature: Ed25519Signature::new([0; 64]),
             public_key: pubkey,
         };
-        let (actual_0, actual_1) = public_key_to_frs(&signature);
+        let (actual_0, actual_1) = public_key_to_frs(&signature).unwrap();
         let expect_0 = Fr::from(ark_ff::BigInt([
             1244302228903607218,
             13386648721483054705,
diff --git a/crates/iota-sdk-ffi/src/faucet.rs b/crates/iota-sdk-ffi/src/faucet.rs
index 822660feb..5f1c28d23 100644
--- a/crates/iota-sdk-ffi/src/faucet.rs
+++ b/crates/iota-sdk-ffi/src/faucet.rs
@@ -94,6 +94,7 @@ impl From<iota_sdk::graphql_client::faucet::BatchSendStatusType> for BatchSendSt
             iota_sdk::graphql_client::faucet::BatchSendStatusType::InProgress => Self::InProgress,
             iota_sdk::graphql_client::faucet::BatchSendStatusType::Succeeded => Self::Succeeded,
             iota_sdk::graphql_client::faucet::BatchSendStatusType::Discarded => Self::Discarded,
+            _ => unimplemented!(),
         }
     }
 }
diff --git a/crates/iota-sdk-ffi/src/graphql.rs b/crates/iota-sdk-ffi/src/graphql.rs
index 5893e193f..a777ee98b 100644
--- a/crates/iota-sdk-ffi/src/graphql.rs
+++ b/crates/iota-sdk-ffi/src/graphql.rs
@@ -39,8 +39,9 @@ use crate::{
     },
 };
 
-#[uniffi::remote(Enum)]
 /// Determines what to wait for after executing a transaction.
+#[uniffi::remote(Enum)]
+#[non_exhaustive]
 pub enum WaitForTx {
     /// Indicates that the transaction effects will be usable in subsequent
     /// transactions, and that the transaction itself is indexed on the node.
diff --git a/crates/iota-sdk-ffi/src/types/execution_status.rs b/crates/iota-sdk-ffi/src/types/execution_status.rs
index 85260bcd5..e1adbf1ea 100644
--- a/crates/iota-sdk-ffi/src/types/execution_status.rs
+++ b/crates/iota-sdk-ffi/src/types/execution_status.rs
@@ -47,6 +47,7 @@ impl From<iota_sdk::types::ExecutionStatus> for ExecutionStatus {
                 error: error.into(),
                 command,
             },
+            _ => unimplemented!(),
         }
     }
 }
@@ -408,6 +409,7 @@ impl From<iota_sdk::types::ExecutionError> for ExecutionError {
                 Self::ExecutionCancelledDueToRandomnessUnavailable
             }
             iota_sdk::types::ExecutionError::InvalidLinkage => Self::InvalidLinkage,
+            _ => unimplemented!(),
         }
     }
 }
@@ -613,6 +615,7 @@ impl From<MoveLocation> for iota_sdk::types::MoveLocation {
 /// shared-object-operation-not-allowed         = %x0b
 /// ```
 #[uniffi::remote(Enum)]
+#[non_exhaustive]
 pub enum CommandArgumentError {
     /// The type of the value does not match the expected type
     TypeMismatch,
@@ -717,6 +720,7 @@ impl From<iota_sdk::types::PackageUpgradeError> for PackageUpgradeError {
                 package_id: Arc::new(package_id.into()),
                 ticket_id: Arc::new(ticket_id.into()),
             },
+            _ => unimplemented!(),
         }
     }
 }
@@ -763,6 +767,7 @@ impl From<PackageUpgradeError> for iota_sdk::types::PackageUpgradeError {
 /// ```
 #[uniffi::remote(Enum)]
 #[repr(u8)]
+#[non_exhaustive]
 pub enum TypeArgumentError {
     /// A type was not found in the module specified
     TypeNotFound,
diff --git a/crates/iota-sdk-ffi/src/types/graphql.rs b/crates/iota-sdk-ffi/src/types/graphql.rs
index 60a927288..317b8d2e0 100644
--- a/crates/iota-sdk-ffi/src/types/graphql.rs
+++ b/crates/iota-sdk-ffi/src/types/graphql.rs
@@ -735,6 +735,7 @@ pub struct ValidatorCredentials {
 }
 
 #[uniffi::remote(Enum)]
+#[non_exhaustive]
 pub enum TransactionBlockKindInput {
     SystemTx,
     ProgrammableTx,
@@ -960,6 +961,7 @@ impl MoveFunction {
 }
 
 #[uniffi::remote(Enum)]
+#[non_exhaustive]
 pub enum MoveVisibility {
     Public,
     Private,
@@ -967,6 +969,7 @@ pub enum MoveVisibility {
 }
 
 #[uniffi::remote(Enum)]
+#[non_exhaustive]
 pub enum MoveAbility {
     Copy,
     Drop,
@@ -1238,6 +1241,7 @@ pub struct ServiceConfig {
 }
 
 #[uniffi::remote(Enum)]
+#[non_exhaustive]
 pub enum Feature {
     Analytics,
     Coins,
diff --git a/crates/iota-sdk-ffi/src/types/signature.rs b/crates/iota-sdk-ffi/src/types/signature.rs
index 23d3f7bcb..1217b6913 100644
--- a/crates/iota-sdk-ffi/src/types/signature.rs
+++ b/crates/iota-sdk-ffi/src/types/signature.rs
@@ -32,6 +32,7 @@ use crate::{
 /// passkey-flag     = %x06
 /// ```
 #[uniffi::remote(Enum)]
+#[non_exhaustive]
 #[repr(u8)]
 pub enum SignatureScheme {
     Ed25519 = 0x00,
diff --git a/crates/iota-sdk-ffi/src/types/transaction/mod.rs b/crates/iota-sdk-ffi/src/types/transaction/mod.rs
index 29aaf21e3..00f584be3 100644
--- a/crates/iota-sdk-ffi/src/types/transaction/mod.rs
+++ b/crates/iota-sdk-ffi/src/types/transaction/mod.rs
@@ -53,6 +53,7 @@ impl Transaction {
     pub fn as_v1(&self) -> Arc<TransactionV1> {
         match &self.0 {
             iota_sdk::types::Transaction::V1(tx) => Arc::new(TransactionV1(tx.clone())),
+            _ => unimplemented!(),
         }
     }
 
@@ -1801,6 +1802,7 @@ impl From<iota_sdk::types::TransactionArgument> for TransactionArgument {
             iota_sdk::types::TransactionArgument::Result { cmd, ix } => {
                 TransactionArgument::Result { cmd, ix }
             }
+            _ => unimplemented!(),
         }
     }
 }
@@ -1960,6 +1962,7 @@ impl From<DryRunResult> for iota_sdk::types::DryRunResult {
 ///                        =/ %x01 u64  ; epoch
 /// ```
 #[uniffi::remote(Enum)]
+#[non_exhaustive]
 pub enum TransactionExpiration {
     /// The transaction has no expiration
     None,
diff --git a/crates/iota-sdk-ffi/src/types/transaction/v1.rs b/crates/iota-sdk-ffi/src/types/transaction/v1.rs
index e60a92ba9..8daa8f60c 100644
--- a/crates/iota-sdk-ffi/src/types/transaction/v1.rs
+++ b/crates/iota-sdk-ffi/src/types/transaction/v1.rs
@@ -252,6 +252,7 @@ impl From<iota_sdk::types::UnchangedSharedKind> for UnchangedSharedKind {
                 Self::Cancelled { version }
             }
             iota_sdk::types::UnchangedSharedKind::PerEpochConfig => Self::PerEpochConfig,
+            _ => unimplemented!(),
         }
     }
 }
@@ -311,6 +312,7 @@ impl From<iota_sdk::types::ObjectIn> for ObjectIn {
                 digest: Arc::new(digest.into()),
                 owner: Arc::new(owner.into()),
             },
+            _ => unimplemented!(),
         }
     }
 }
@@ -374,6 +376,7 @@ impl From<iota_sdk::types::ObjectOut> for ObjectOut {
                 version,
                 digest: Arc::new(digest.into()),
             },
+            _ => unimplemented!(),
         }
     }
 }
@@ -410,6 +413,7 @@ impl From<ObjectOut> for iota_sdk::types::ObjectOut {
 /// id-operation-deleted    = %x02
 /// ```
 #[uniffi::remote(Enum)]
+#[non_exhaustive]
 #[repr(u8)]
 pub enum IdOperation {
     None,
diff --git a/crates/iota-sdk-graphql-client/src/faucet.rs b/crates/iota-sdk-graphql-client/src/faucet.rs
index dc7f6c54c..2382c2dca 100644
--- a/crates/iota-sdk-graphql-client/src/faucet.rs
+++ b/crates/iota-sdk-graphql-client/src/faucet.rs
@@ -38,6 +38,7 @@ struct BatchStatusFaucetResponse {
 
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
 #[serde(rename_all = "UPPERCASE")]
+#[non_exhaustive]
 pub enum BatchSendStatusType {
     InProgress,
     Succeeded,
diff --git a/crates/iota-sdk-graphql-client/src/lib.rs b/crates/iota-sdk-graphql-client/src/lib.rs
index 4f93e8b74..5dbda0801 100644
--- a/crates/iota-sdk-graphql-client/src/lib.rs
+++ b/crates/iota-sdk-graphql-client/src/lib.rs
@@ -76,6 +76,7 @@ fn response_to_err<T>(response: GraphQlResponse<T>) -> Result<T, crate::Error> {
 }
 
 /// Determines what to wait for after executing a transaction.
+#[non_exhaustive]
 pub enum WaitForTx {
     /// Indicates that the transaction effects will be usable in subsequent
     /// transactions, and that the transaction itself is indexed on the node.
diff --git a/crates/iota-sdk-graphql-client/src/query_types/dry_run.rs b/crates/iota-sdk-graphql-client/src/query_types/dry_run.rs
index 716b3487b..6ee8ebfcd 100644
--- a/crates/iota-sdk-graphql-client/src/query_types/dry_run.rs
+++ b/crates/iota-sdk-graphql-client/src/query_types/dry_run.rs
@@ -48,6 +48,7 @@ pub struct DryRunReturn {
 
 #[derive(cynic::InlineFragments, Debug)]
 #[cynic(schema = "rpc", graphql_type = "TransactionArgument")]
+#[non_exhaustive]
 pub enum TransactionArgument {
     GasCoin(GasCoin),
     Input(Input),
diff --git a/crates/iota-sdk-graphql-client/src/query_types/dynamic_fields.rs b/crates/iota-sdk-graphql-client/src/query_types/dynamic_fields.rs
index 358219efd..d1896e62c 100644
--- a/crates/iota-sdk-graphql-client/src/query_types/dynamic_fields.rs
+++ b/crates/iota-sdk-graphql-client/src/query_types/dynamic_fields.rs
@@ -78,6 +78,7 @@ pub struct DynamicField {
 
 #[derive(cynic::InlineFragments, Debug)]
 #[cynic(schema = "rpc", graphql_type = "DynamicFieldValue")]
+#[non_exhaustive]
 pub enum DynamicFieldValue {
     MoveObject(MoveObjectContents),
     MoveValue(MoveValue),
diff --git a/crates/iota-sdk-graphql-client/src/query_types/normalized_move/mod.rs b/crates/iota-sdk-graphql-client/src/query_types/normalized_move/mod.rs
index b6c401b6e..02b8610e4 100644
--- a/crates/iota-sdk-graphql-client/src/query_types/normalized_move/mod.rs
+++ b/crates/iota-sdk-graphql-client/src/query_types/normalized_move/mod.rs
@@ -17,6 +17,7 @@ use crate::query_types::schema;
 #[derive(cynic::Enum, Copy, Debug, Clone, strum::Display)]
 #[cynic(schema = "rpc", graphql_type = "MoveAbility")]
 #[strum(serialize_all = "snake_case")]
+#[non_exhaustive]
 pub enum MoveAbility {
     Copy,
     Drop,
@@ -27,6 +28,7 @@ pub enum MoveAbility {
 #[derive(cynic::Enum, Copy, Debug, Clone, strum::Display)]
 #[cynic(schema = "rpc", graphql_type = "MoveVisibility")]
 #[strum(serialize_all = "snake_case")]
+#[non_exhaustive]
 pub enum MoveVisibility {
     Public,
     Private,
diff --git a/crates/iota-sdk-graphql-client/src/query_types/service_config.rs b/crates/iota-sdk-graphql-client/src/query_types/service_config.rs
index 7a0b0ea22..3ae5a6acb 100644
--- a/crates/iota-sdk-graphql-client/src/query_types/service_config.rs
+++ b/crates/iota-sdk-graphql-client/src/query_types/service_config.rs
@@ -80,6 +80,7 @@ pub struct ServiceConfig {
     graphql_type = "Feature",
     rename_all = "SCREAMING_SNAKE_CASE"
 )]
+#[non_exhaustive]
 pub enum Feature {
     Analytics,
     Coins,
diff --git a/crates/iota-sdk-graphql-client/src/query_types/transaction.rs b/crates/iota-sdk-graphql-client/src/query_types/transaction.rs
index 7875dd7b1..2b2f904e5 100644
--- a/crates/iota-sdk-graphql-client/src/query_types/transaction.rs
+++ b/crates/iota-sdk-graphql-client/src/query_types/transaction.rs
@@ -170,6 +170,7 @@ pub struct TransactionBlockCheckpoint {
     graphql_type = "TransactionBlockKindInput",
     rename_all = "SCREAMING_SNAKE_CASE"
 )]
+#[non_exhaustive]
 pub enum TransactionBlockKindInput {
     SystemTx,
     ProgrammableTx,
diff --git a/crates/iota-sdk-transaction-builder/src/builder/client_methods.rs b/crates/iota-sdk-transaction-builder/src/builder/client_methods.rs
index 8d8e2a0f0..db0e0ee9d 100644
--- a/crates/iota-sdk-transaction-builder/src/builder/client_methods.rs
+++ b/crates/iota-sdk-transaction-builder/src/builder/client_methods.rs
@@ -228,7 +228,9 @@ impl ClientMethods for iota_graphql_client::Client {
         tx: &Transaction,
         skip_checks: bool,
     ) -> Result<DryRunResult, Self::Error> {
-        let Transaction::V1(tx) = &tx;
+        let Transaction::V1(tx) = &tx else {
+            unimplemented!()
+        };
         let gas_objects = tx
             .gas_payment
             .objects
diff --git a/crates/iota-sdk-transaction-builder/src/builder/gas_station.rs b/crates/iota-sdk-transaction-builder/src/builder/gas_station.rs
index 60bcb0ab1..8951b629b 100644
--- a/crates/iota-sdk-transaction-builder/src/builder/gas_station.rs
+++ b/crates/iota-sdk-transaction-builder/src/builder/gas_station.rs
@@ -407,6 +407,7 @@ impl GasStationData {
                 inner_txn.gas_payment.objects = objects;
                 reservation_id
             }
+            _ => unimplemented!(),
         };
 
         let tx_bytes = base64ct::Base64::encode_string(&bcs::to_bytes(&txn).map_err(Error::Bcs)?);
diff --git a/crates/iota-sdk-transaction-builder/src/builder/mod.rs b/crates/iota-sdk-transaction-builder/src/builder/mod.rs
index 46589f7f8..11041704b 100644
--- a/crates/iota-sdk-transaction-builder/src/builder/mod.rs
+++ b/crates/iota-sdk-transaction-builder/src/builder/mod.rs
@@ -1027,6 +1027,7 @@ impl<C: ClientMethods, L> TransactionBuilder<C, L> {
                                 initial_shared_version: *v,
                                 mutable: false,
                             },
+                            _ => unimplemented!(),
                         };
                         let idx = inputs.len();
                         inputs.push(input);
@@ -1113,7 +1114,9 @@ impl<C: ClientMethods, L> TransactionBuilder<C, L> {
                 .await
                 .map_err(Error::client)?
                 .ok_or(Error::MissingGasBudget)?;
-            let Transaction::V1(txn) = &mut txn;
+            let Transaction::V1(txn) = &mut txn else {
+                unimplemented!()
+            };
             txn.gas_payment.budget = budget
         }
 
@@ -1129,7 +1132,9 @@ impl<C: ClientMethods, L> TransactionBuilder<C, L> {
     pub async fn dry_run(mut self, skip_checks: bool) -> Result<DryRunResult, Error> {
         let txn = self.resolve_ptb(false).await?;
         {
-            let Transaction::V1(txn) = &txn;
+            let Transaction::V1(txn) = &txn else {
+                unimplemented!()
+            };
             if !txn.gas_payment.objects.is_empty() && txn.gas_payment.budget == 0 {
                 return Err(Error::DryRun(
                     "gas coins were provided without a gas budget".to_owned(),
diff --git a/crates/iota-sdk-transaction-builder/src/lib.rs b/crates/iota-sdk-transaction-builder/src/lib.rs
index 2277197b8..9e7598892 100644
--- a/crates/iota-sdk-transaction-builder/src/lib.rs
+++ b/crates/iota-sdk-transaction-builder/src/lib.rs
@@ -577,6 +577,7 @@ mod tests {
                         }
                     }
                 }
+                _ => unimplemented!(),
             }
         }
         check_effects_status_success(effects).await;
diff --git a/crates/iota-sdk-transaction-builder/src/unresolved.rs b/crates/iota-sdk-transaction-builder/src/unresolved.rs
index 48c547887..3987eb809 100644
--- a/crates/iota-sdk-transaction-builder/src/unresolved.rs
+++ b/crates/iota-sdk-transaction-builder/src/unresolved.rs
@@ -29,12 +29,14 @@ impl Input {
                 | iota_types::Input::Receiving(ObjectReference { object_id, .. }) => {
                     Some(object_id)
                 }
+                _ => unimplemented!(),
             },
         }
     }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
+#[non_exhaustive]
 pub enum InputKind {
     ImmutableOrOwned(ObjectId),
     Shared { object_id: ObjectId, mutable: bool },
@@ -61,6 +63,7 @@ impl InputKind {
 }
 
 #[derive(Debug, Clone, derive_more::From)]
+#[non_exhaustive]
 pub enum Command {
     MoveCall(MoveCall),
     TransferObjects(TransferObjects),
@@ -231,6 +234,7 @@ impl Publish {
 }
 
 #[derive(Debug, Clone, Copy)]
+#[non_exhaustive]
 pub enum Argument {
     Gas,
     Input(InputId),
diff --git a/crates/iota-sdk-types/src/checkpoint.rs b/crates/iota-sdk-types/src/checkpoint.rs
index e6ee734f7..55e6e0143 100644
--- a/crates/iota-sdk-types/src/checkpoint.rs
+++ b/crates/iota-sdk-types/src/checkpoint.rs
@@ -31,6 +31,7 @@ pub type ProtocolVersion = u64;
     schemars(tag = "type", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum CheckpointCommitment {
     /// An Elliptic Curve Multiset Hash attesting to the set of Objects that
     /// compose the live state of the IOTA blockchain.
diff --git a/crates/iota-sdk-types/src/crypto/multisig.rs b/crates/iota-sdk-types/src/crypto/multisig.rs
index 493e29342..012f52dd5 100644
--- a/crates/iota-sdk-types/src/crypto/multisig.rs
+++ b/crates/iota-sdk-types/src/crypto/multisig.rs
@@ -47,6 +47,7 @@ const MAX_COMMITTEE_SIZE: usize = 10;
 /// ```
 #[derive(Clone, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum MultisigMemberPublicKey {
     Ed25519(Ed25519PublicKey),
     Secp256k1(Secp256k1PublicKey),
@@ -320,6 +321,7 @@ impl Eq for MultisigAggregatedSignature {}
 /// ```
 #[derive(Debug, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum MultisigMemberSignature {
     Ed25519(Ed25519Signature),
     Secp256k1(Secp256k1Signature),
diff --git a/crates/iota-sdk-types/src/crypto/passkey.rs b/crates/iota-sdk-types/src/crypto/passkey.rs
index a4d469d68..47bfc96b0 100644
--- a/crates/iota-sdk-types/src/crypto/passkey.rs
+++ b/crates/iota-sdk-types/src/crypto/passkey.rs
@@ -310,7 +310,7 @@ mod serialization {
     /// [5.8.1.1 Serialization]: https://w3c.github.io/webauthn/#clientdatajson-serialization
     #[derive(Debug, Clone, Serialize, Deserialize)]
     #[serde(rename_all = "camelCase")]
-    pub struct CollectedClientData {
+    pub(super) struct CollectedClientData {
         /// This member contains the value [`ClientDataType::Create`] when
         /// creating new credentials, and [`ClientDataType::Get`] when
         /// getting an assertion from an existing credential. The purpose
@@ -349,7 +349,7 @@ mod serialization {
     /// Used to limit the values of [`CollectedClientData::ty`] and serializes
     /// to static strings.
     #[derive(Debug, Deserialize, Serialize, Clone, Copy, PartialEq, Eq)]
-    pub enum ClientDataType {
+    pub(super) enum ClientDataType {
         /// Serializes to the string `"webauthn.get"`
         ///
         /// Passkey's in IOTA only support the value `"webauthn.get"`, other
diff --git a/crates/iota-sdk-types/src/crypto/signature.rs b/crates/iota-sdk-types/src/crypto/signature.rs
index bfe290fcd..4e51bb4a2 100644
--- a/crates/iota-sdk-types/src/crypto/signature.rs
+++ b/crates/iota-sdk-types/src/crypto/signature.rs
@@ -37,6 +37,7 @@ use super::{
     schemars(tag = "scheme", rename_all = "lowercase")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum SimpleSignature {
     Ed25519 {
         signature: Ed25519Signature,
@@ -216,6 +217,7 @@ impl SimpleSignature {
 #[strum(serialize_all = "lowercase")]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
 #[repr(u8)]
+#[non_exhaustive]
 pub enum SignatureScheme {
     Ed25519 = 0x00,
     Secp256k1 = 0x01,
@@ -295,6 +297,7 @@ impl std::fmt::Display for InvalidSignatureScheme {
 /// the completely serialized signature.
 #[derive(Clone, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum UserSignature {
     Simple(SimpleSignature),
     Multisig(MultisigAggregatedSignature),
diff --git a/crates/iota-sdk-types/src/effects/mod.rs b/crates/iota-sdk-types/src/effects/mod.rs
index 703b625c6..d747e0df0 100644
--- a/crates/iota-sdk-types/src/effects/mod.rs
+++ b/crates/iota-sdk-types/src/effects/mod.rs
@@ -28,6 +28,7 @@ use crate::{SignedTransaction, TypeTag, execution_status::ExecutionStatus};
     schemars(tag = "version")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum TransactionEffects {
     #[cfg_attr(feature = "schemars", schemars(rename = "1"))]
     V1(Box<TransactionEffectsV1>),
@@ -121,6 +122,7 @@ pub struct DryRunReturn {
 /// A transaction argument used in programmable transactions.
 #[derive(Clone, Debug, PartialEq)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[non_exhaustive]
 pub enum TransactionArgument {
     /// Reference to the gas coin.
     GasCoin,
diff --git a/crates/iota-sdk-types/src/effects/v1.rs b/crates/iota-sdk-types/src/effects/v1.rs
index d9cb8fac1..980892c0b 100644
--- a/crates/iota-sdk-types/src/effects/v1.rs
+++ b/crates/iota-sdk-types/src/effects/v1.rs
@@ -158,6 +158,7 @@ pub struct UnchangedSharedObject {
     schemars(tag = "kind", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum UnchangedSharedKind {
     /// Read-only shared objects from the input. We don't really need
     /// ObjectDigest for protocol correctness, but it will make it easier to
@@ -221,6 +222,7 @@ impl UnchangedSharedKind {
     schemars(tag = "state", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum ObjectIn {
     Missing,
     /// The old version, digest and owner.
@@ -295,6 +297,7 @@ impl ObjectIn {
     schemars(tag = "state", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum ObjectOut {
     /// Same definition as in ObjectIn.
     Missing,
@@ -384,6 +387,7 @@ impl ObjectOut {
 )]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum IdOperation {
     None,
     Created,
diff --git a/crates/iota-sdk-types/src/execution_status.rs b/crates/iota-sdk-types/src/execution_status.rs
index 8f7715bba..b5510ff1d 100644
--- a/crates/iota-sdk-types/src/execution_status.rs
+++ b/crates/iota-sdk-types/src/execution_status.rs
@@ -17,6 +17,7 @@ use super::{Address, Digest, Identifier, ObjectId};
 /// ```
 #[derive(Eq, PartialEq, Clone, Debug)]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum ExecutionStatus {
     /// The Transaction successfully executed.
     Success,
@@ -148,6 +149,7 @@ impl ExecutionStatus {
     schemars(tag = "error", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum ExecutionError {
     /// Insufficient Gas
     InsufficientGas,
@@ -388,6 +390,7 @@ pub struct MoveLocation {
     schemars(tag = "kind", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum CommandArgumentError {
     /// The type of the value does not match the expected type
     TypeMismatch,
@@ -470,6 +473,7 @@ impl CommandArgumentError {
     schemars(tag = "kind", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum PackageUpgradeError {
     /// Unable to fetch package
     UnableToFetchPackage { package_id: ObjectId },
@@ -522,6 +526,7 @@ impl PackageUpgradeError {
     schemars(rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum TypeArgumentError {
     /// A type was not found in the module specified
     TypeNotFound,
diff --git a/crates/iota-sdk-types/src/framework.rs b/crates/iota-sdk-types/src/framework.rs
index 5cb9cf478..7f0d38195 100644
--- a/crates/iota-sdk-types/src/framework.rs
+++ b/crates/iota-sdk-types/src/framework.rs
@@ -55,6 +55,7 @@ impl Coin {
 }
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
+#[non_exhaustive]
 pub enum CoinFromObjectError {
     NotACoin,
     InvalidContentLength,
diff --git a/crates/iota-sdk-types/src/iota_names/error.rs b/crates/iota-sdk-types/src/iota_names/error.rs
index 1a1771aa3..03eaffe15 100644
--- a/crates/iota-sdk-types/src/iota_names/error.rs
+++ b/crates/iota-sdk-types/src/iota_names/error.rs
@@ -5,6 +5,7 @@ use crate::ObjectId;
 
 #[derive(thiserror::Error, Debug, Clone, Eq, PartialEq)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[non_exhaustive]
 pub enum IotaNamesError {
     #[error("Name length {0} exceeds maximum length {1}")]
     NameLengthExceeded(usize, usize),
diff --git a/crates/iota-sdk-types/src/move_package.rs b/crates/iota-sdk-types/src/move_package.rs
index 6ccc1e74c..b9f1709b3 100644
--- a/crates/iota-sdk-types/src/move_package.rs
+++ b/crates/iota-sdk-types/src/move_package.rs
@@ -7,6 +7,7 @@ use crate::{Digest, ObjectId};
 #[repr(u8)]
 #[derive(strum::Display, Debug, Clone, Copy, PartialEq, Eq)]
 #[strum(serialize_all = "SCREAMING_SNAKE_CASE")]
+#[non_exhaustive]
 pub enum UpgradePolicy {
     /// The least restrictive policy. Permits changes to all function
     /// implementations, the removal of ability constraints on generic type
diff --git a/crates/iota-sdk-types/src/object.rs b/crates/iota-sdk-types/src/object.rs
index e17627d6e..d84b96e02 100644
--- a/crates/iota-sdk-types/src/object.rs
+++ b/crates/iota-sdk-types/src/object.rs
@@ -97,6 +97,7 @@ impl ObjectReference {
 )]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum Owner {
     /// Object is exclusively owned by a single address, and is mutable.
     Address(Address),
diff --git a/crates/iota-sdk-types/src/transaction/mod.rs b/crates/iota-sdk-types/src/transaction/mod.rs
index ed6dde56a..be54aad62 100644
--- a/crates/iota-sdk-types/src/transaction/mod.rs
+++ b/crates/iota-sdk-types/src/transaction/mod.rs
@@ -29,6 +29,7 @@ pub(crate) use serialization::SignedTransactionWithIntentMessage;
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[non_exhaustive]
 pub enum Transaction {
     #[cfg_attr(feature = "serde", serde(rename = "1"))]
     V1(TransactionV1),
@@ -87,6 +88,7 @@ pub struct SignedTransaction {
 /// ```
 #[derive(Clone, Copy, Default, Debug, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum TransactionExpiration {
     /// The transaction has no expiration
     #[default]
@@ -189,6 +191,7 @@ pub struct RandomnessStateUpdate {
 /// ```
 #[derive(Clone, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum TransactionKind {
     /// A user transaction comprised of a list of native commands and move calls
     ProgrammableTransaction(ProgrammableTransaction),
@@ -254,6 +257,7 @@ impl TransactionKind {
     schemars(tag = "kind", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum EndOfEpochTransactionKind {
     /// End the epoch and start the next one
     ChangeEpoch(ChangeEpoch),
@@ -293,6 +297,7 @@ impl EndOfEpochTransactionKind {
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[non_exhaustive]
 pub enum ExecutionTimeObservations {
     V1(Vec<ExecutionTimeObservation>),
 }
@@ -351,6 +356,7 @@ pub struct ValidatorExecutionTimeObservation {
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[non_exhaustive]
 pub enum ExecutionTimeObservationKey {
     // Contains all the fields from `ProgrammableMoveCall` besides `arguments`.
     MoveEntryPoint {
@@ -472,6 +478,7 @@ pub struct ActiveJwk {
     schemars(tag = "kind", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum ConsensusDeterminedVersionAssignments {
     /// Cancelled transaction version assignment.
     CancelledTransactions {
@@ -886,6 +893,7 @@ pub struct ProgrammableTransaction {
     schemars(tag = "type", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum Input {
     /// A move value serialized as BCS.
     ///
@@ -950,6 +958,7 @@ impl Input {
     schemars(tag = "command", rename_all = "snake_case")
 )]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum Command {
     /// A call to either an entry or a public Move function
     MoveCall(MoveCall),
@@ -1165,6 +1174,7 @@ pub struct Upgrade {
 /// ```
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "proptest", derive(test_strategy::Arbitrary))]
+#[non_exhaustive]
 pub enum Argument {
     /// The gas coin. The gas coin can only be used by-ref, except for with
     /// `TransferObjects`, which can use it by-value.
diff --git a/crates/iota-sdk/examples/get_object.rs b/crates/iota-sdk/examples/get_object.rs
index 0b3a98ab1..993cd567c 100644
--- a/crates/iota-sdk/examples/get_object.rs
+++ b/crates/iota-sdk/examples/get_object.rs
@@ -3,7 +3,7 @@
 
 use std::str::FromStr;
 
-use eyre::{OptionExt, Result};
+use eyre::{OptionExt, Result, bail};
 use iota_sdk::{graphql_client::Client, types::ObjectId};
 
 #[tokio::main]
@@ -31,6 +31,7 @@ async fn main() -> Result<()> {
             iota_types::Owner::Object(object_id) => format!("Object({object_id})"),
             iota_types::Owner::Shared(version) => format!("Shared({version})"),
             iota_types::Owner::Immutable => "Immutable".to_owned(),
+            _ => bail!("unknown owner type"),
         }
     );
     println!("Storage rebate: {}", obj.storage_rebate());