diff --git a/.gitignore b/.gitignore
index ea8c4bf..d9ce906 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /target
+/zec_sqlite_wallet*
diff --git a/Cargo.lock b/Cargo.lock
index 345575d..66b3e0b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -529,8 +529,7 @@ checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
 [[package]]
 name = "equihash"
 version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab579d7cf78477773b03e80bc2f89702ef02d7112c711d54ca93dcdce68533d5"
+source = "git+https://github.com/zcash/librustzcash.git?rev=236cd569ee4a824d98920d1a61b8cc2b90ceba1d#236cd569ee4a824d98920d1a61b8cc2b90ceba1d"
 dependencies = [
  "blake2b_simd",
  "byteorder",
@@ -555,8 +554,7 @@ dependencies = [
 [[package]]
 name = "f4jumble"
 version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a83e8d7fd0c526af4aad893b7c9fe41e2699ed8a776a6c74aecdeafe05afc75"
+source = "git+https://github.com/zcash/librustzcash.git?rev=236cd569ee4a824d98920d1a61b8cc2b90ceba1d#236cd569ee4a824d98920d1a61b8cc2b90ceba1d"
 dependencies = [
  "blake2b_simd",
 ]
@@ -1842,9 +1840,9 @@ dependencies = [
 
 [[package]]
 name = "shardtree"
-version = "0.1.0"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c19f96dde3a8693874f7e7c53d95616569b4009379a903789efbd448f4ea9cc7"
+checksum = "dbf20c7a2747d9083092e3a3eeb9a7ed75577ae364896bebbc5e0bdcd4e97735"
 dependencies = [
  "bitflags 2.4.1",
  "either",
@@ -2611,8 +2609,7 @@ checksum = "213b7324336b53d2414b2db8537e56544d981803139155afa84f76eeebb7a546"
 [[package]]
 name = "zcash_address"
 version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8944af5c206cf2e37020ad54618e1825501b98548d35a638b73e0ec5762df8d5"
+source = "git+https://github.com/zcash/librustzcash.git?rev=236cd569ee4a824d98920d1a61b8cc2b90ceba1d#236cd569ee4a824d98920d1a61b8cc2b90ceba1d"
 dependencies = [
  "bech32",
  "bs58",
@@ -2623,8 +2620,7 @@ dependencies = [
 [[package]]
 name = "zcash_client_backend"
 version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6a382af39be9ee5a3788157145c404b7cd19acc440903f6c34b09fb44f0e991"
+source = "git+https://github.com/zcash/librustzcash.git?rev=236cd569ee4a824d98920d1a61b8cc2b90ceba1d#236cd569ee4a824d98920d1a61b8cc2b90ceba1d"
 dependencies = [
  "base64",
  "bech32",
@@ -2637,6 +2633,7 @@ dependencies = [
  "incrementalmerkletree",
  "memuse",
  "nom",
+ "nonempty",
  "orchard",
  "percent-encoding",
  "prost",
@@ -2658,8 +2655,7 @@ dependencies = [
 [[package]]
 name = "zcash_client_sqlite"
 version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9e9603969437fa41e469f0c0e646e9604f04403304380c00433d8df91c046d2"
+source = "git+https://github.com/zcash/librustzcash.git?rev=236cd569ee4a824d98920d1a61b8cc2b90ceba1d#236cd569ee4a824d98920d1a61b8cc2b90ceba1d"
 dependencies = [
  "bs58",
  "byteorder",
@@ -2684,8 +2680,7 @@ dependencies = [
 [[package]]
 name = "zcash_encoding"
 version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f03391b81727875efa6ac0661a20883022b6fba92365dc121c48fa9b00c5aac0"
+source = "git+https://github.com/zcash/librustzcash.git?rev=236cd569ee4a824d98920d1a61b8cc2b90ceba1d#236cd569ee4a824d98920d1a61b8cc2b90ceba1d"
 dependencies = [
  "byteorder",
  "nonempty",
@@ -2707,10 +2702,10 @@ dependencies = [
 [[package]]
 name = "zcash_primitives"
 version = "0.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d17e4c94ca8d69d2fcf2be97522da5732a580eb2125cda3b150761952f8df8e6"
+source = "git+https://github.com/zcash/librustzcash.git?rev=236cd569ee4a824d98920d1a61b8cc2b90ceba1d#236cd569ee4a824d98920d1a61b8cc2b90ceba1d"
 dependencies = [
  "aes",
+ "bellman",
  "bip0039",
  "bitvec",
  "blake2b_simd",
@@ -2730,8 +2725,10 @@ dependencies = [
  "orchard",
  "rand",
  "rand_core",
+ "redjubjub",
  "sha2",
  "subtle",
+ "tracing",
  "zcash_address",
  "zcash_encoding",
  "zcash_note_encryption",
@@ -2740,8 +2737,7 @@ dependencies = [
 [[package]]
 name = "zcash_proofs"
 version = "0.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df0c99f65a840ff256c106b28d67d702d9759d206112473d4982c92003262406"
+source = "git+https://github.com/zcash/librustzcash.git?rev=236cd569ee4a824d98920d1a61b8cc2b90ceba1d#236cd569ee4a824d98920d1a61b8cc2b90ceba1d"
 dependencies = [
  "bellman",
  "blake2b_simd",
diff --git a/Cargo.toml b/Cargo.toml
index 5ca1181..5716b37 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,3 +24,9 @@ zcash_client_backend = { version = "0.10", features = ["lightwalletd-tonic"] }
 zcash_client_sqlite = { version = "0.8", features = ["unstable"] }
 zcash_primitives = "0.13"
 zcash_proofs = "0.13"
+
+[patch.crates-io]
+zcash_primitives = { git = "https://github.com/zcash/librustzcash.git", rev = "236cd569ee4a824d98920d1a61b8cc2b90ceba1d" }
+zcash_proofs = { git = "https://github.com/zcash/librustzcash.git", rev = "236cd569ee4a824d98920d1a61b8cc2b90ceba1d" }
+zcash_client_backend = { git = "https://github.com/zcash/librustzcash.git", rev = "236cd569ee4a824d98920d1a61b8cc2b90ceba1d" }
+zcash_client_sqlite = { git = "https://github.com/zcash/librustzcash.git", rev = "236cd569ee4a824d98920d1a61b8cc2b90ceba1d" }
diff --git a/src/commands.rs b/src/commands.rs
index a39af4a..d203798 100644
--- a/src/commands.rs
+++ b/src/commands.rs
@@ -2,6 +2,7 @@ pub(crate) mod balance;
 pub(crate) mod init;
 pub(crate) mod list_tx;
 pub(crate) mod list_unspent;
+pub(crate) mod propose;
 pub(crate) mod reset;
 pub(crate) mod send;
 pub(crate) mod sync;
diff --git a/src/commands/list_unspent.rs b/src/commands/list_unspent.rs
index 44c0fc3..bf57053 100644
--- a/src/commands/list_unspent.rs
+++ b/src/commands/list_unspent.rs
@@ -1,11 +1,14 @@
 use anyhow::anyhow;
 use gumdrop::Options;
 
-use zcash_client_backend::data_api::WalletRead;
+use zcash_client_backend::data_api::{SaplingInputSource, WalletRead};
 use zcash_client_sqlite::WalletDb;
 use zcash_primitives::{
     consensus::Parameters,
-    transaction::components::amount::{Amount, MAX_MONEY},
+    transaction::components::{
+        amount::{Amount, MAX_MONEY},
+        sapling::fees::InputView,
+    },
     zip32::AccountId,
 };
 
@@ -41,7 +44,7 @@ impl Command {
         )?;
 
         for note in notes {
-            println!("{}: {}", note.note_id, format_zec(note.note_value));
+            println!("{}: {}", note.note_id(), format_zec(note.value()));
         }
 
         Ok(())
diff --git a/src/commands/propose.rs b/src/commands/propose.rs
new file mode 100644
index 0000000..7c99dec
--- /dev/null
+++ b/src/commands/propose.rs
@@ -0,0 +1,110 @@
+use gumdrop::Options;
+
+use zcash_client_backend::{
+    address::RecipientAddress,
+    data_api::wallet::{input_selection::GreedyInputSelector, propose_transfer},
+    fees::standard::SingleOutputChangeStrategy,
+    zip321::{Payment, TransactionRequest},
+};
+use zcash_client_sqlite::WalletDb;
+use zcash_primitives::{
+    consensus::Parameters,
+    transaction::{components::amount::NonNegativeAmount, fees::StandardFeeRule},
+    zip32::AccountId,
+};
+
+use crate::{data::get_db_paths, error, MIN_CONFIRMATIONS};
+
+#[derive(Clone, Copy, Debug)]
+pub(crate) enum FeeRule {
+    Fixed,
+    Zip317,
+}
+
+impl Default for FeeRule {
+    fn default() -> Self {
+        FeeRule::Zip317
+    }
+}
+
+#[allow(deprecated)]
+impl From<FeeRule> for StandardFeeRule {
+    fn from(rule: FeeRule) -> Self {
+        match rule {
+            FeeRule::Fixed => StandardFeeRule::PreZip313,
+            FeeRule::Zip317 => StandardFeeRule::Zip317,
+        }
+    }
+}
+
+pub(crate) fn parse_fee_rule(name: &str) -> Result<FeeRule, String> {
+    match name {
+        "fixed" => Ok(FeeRule::Fixed),
+        "zip317" => Ok(FeeRule::Zip317),
+        other => Err(format!("Fee rule {} not recognized.", other)),
+    }
+}
+
+// Options accepted for the `propose` command
+#[derive(Debug, Options)]
+pub(crate) struct Command {
+    #[options(
+        required,
+        help = "the recipient's Unified, Sapling or transparent address"
+    )]
+    address: String,
+
+    #[options(required, help = "the amount in zatoshis")]
+    value: u64,
+
+    #[options(
+        required,
+        help = "fee strategy: \"fixed\" or \"zip317\"",
+        parse(try_from_str = "parse_fee_rule")
+    )]
+    fee_rule: FeeRule,
+}
+
+impl Command {
+    pub(crate) async fn run(
+        self,
+        params: impl Parameters + Copy + 'static,
+        wallet_dir: Option<String>,
+    ) -> Result<(), anyhow::Error> {
+        let account = AccountId::from(0);
+        let (_, db_data) = get_db_paths(wallet_dir.as_ref());
+        let mut db_data = WalletDb::for_path(db_data, params)?;
+
+        let input_selector = GreedyInputSelector::new(
+            SingleOutputChangeStrategy::new(self.fee_rule.into(), None),
+            Default::default(),
+        );
+
+        let request = TransactionRequest::new(vec![Payment {
+            recipient_address: RecipientAddress::decode(&params, &self.address)
+                .ok_or(error::Error::InvalidRecipient)?,
+            amount: NonNegativeAmount::from_u64(self.value)
+                .map_err(|_| error::Error::InvalidAmount)?,
+            memo: None,
+            label: None,
+            message: None,
+            other_params: vec![],
+        }])
+        .map_err(error::Error::from)?;
+
+        let proposal = propose_transfer(
+            &mut db_data,
+            &params,
+            account,
+            &input_selector,
+            request,
+            MIN_CONFIRMATIONS,
+        )
+        .map_err(error::Error::from)?;
+
+        // Display the proposal
+        println!("Proposal: {:#?}", proposal);
+
+        Ok(())
+    }
+}
diff --git a/src/commands/send.rs b/src/commands/send.rs
index 73ae0e7..4d2190e 100644
--- a/src/commands/send.rs
+++ b/src/commands/send.rs
@@ -7,7 +7,7 @@ use zcash_client_backend::{
         wallet::{input_selection::GreedyInputSelector, spend},
         WalletRead,
     },
-    fees::zip317::SingleOutputChangeStrategy,
+    fees::standard::SingleOutputChangeStrategy,
     keys::UnifiedSpendingKey,
     proto::service,
     wallet::OvkPolicy,
@@ -15,13 +15,12 @@ use zcash_client_backend::{
 };
 use zcash_client_sqlite::WalletDb;
 use zcash_primitives::{
-    consensus::Parameters,
-    transaction::{components::Amount, fees::zip317::FeeRule},
-    zip32::AccountId,
+    consensus::Parameters, transaction::components::amount::NonNegativeAmount, zip32::AccountId,
 };
 use zcash_proofs::prover::LocalTxProver;
 
 use crate::{
+    commands::propose::{parse_fee_rule, FeeRule},
     data::{get_db_paths, get_wallet_seed},
     error,
     remote::connect_to_lightwalletd,
@@ -36,6 +35,13 @@ pub(crate) struct Command {
 
     #[options(required, help = "the amount in zatoshis")]
     value: u64,
+
+    #[options(
+        required,
+        help = "fee strategy: \"fixed\" or \"zip317\"",
+        parse(try_from_str = "parse_fee_rule")
+    )]
+    fee_rule: FeeRule,
 }
 
 impl Command {
@@ -59,14 +65,15 @@ impl Command {
         let prover =
             LocalTxProver::with_default_location().ok_or(error::Error::MissingParameters)?;
         let input_selector = GreedyInputSelector::new(
-            SingleOutputChangeStrategy::new(FeeRule::standard()),
+            SingleOutputChangeStrategy::new(self.fee_rule.into(), None),
             Default::default(),
         );
 
         let request = TransactionRequest::new(vec![Payment {
             recipient_address: RecipientAddress::decode(&params, &self.address)
                 .ok_or(error::Error::InvalidRecipient)?,
-            amount: Amount::from_u64(self.value).map_err(|_| error::Error::InvalidAmount)?,
+            amount: NonNegativeAmount::from_u64(self.value)
+                .map_err(|_| error::Error::InvalidAmount)?,
             memo: None,
             label: None,
             message: None,
@@ -77,7 +84,8 @@ impl Command {
         let id_tx = spend(
             &mut db_data,
             &params,
-            prover,
+            &prover,
+            &prover,
             &input_selector,
             &usk,
             request,
diff --git a/src/error.rs b/src/error.rs
index 1619b42..49812d4 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -18,7 +18,6 @@ pub(crate) type WalletErrorT = WalletError<
     commitment_tree::Error,
     GreedyInputSelectorError<FeeError, ReceivedNoteId>,
     FeeError,
-    ReceivedNoteId,
 >;
 
 #[derive(Debug)]
diff --git a/src/main.rs b/src/main.rs
index 216b31a..1ada5ec 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -54,6 +54,9 @@ enum Command {
     #[options(help = "list the unspent notes in the wallet")]
     ListUnspent(commands::list_unspent::Command),
 
+    #[options(help = "propose a transfer of funds to the given address and display the proposal")]
+    Propose(commands::propose::Command),
+
     #[options(help = "send funds to the given address")]
     Send(commands::send::Command),
 }
@@ -89,6 +92,7 @@ fn main() -> Result<(), anyhow::Error> {
             Some(Command::Balance(command)) => command.run(params, opts.wallet_dir),
             Some(Command::ListTx(command)) => command.run(opts.wallet_dir),
             Some(Command::ListUnspent(command)) => command.run(params, opts.wallet_dir),
+            Some(Command::Propose(command)) => command.run(params, opts.wallet_dir).await,
             Some(Command::Send(command)) => command.run(params, opts.wallet_dir).await,
             _ => Ok(()),
         }