diff --git a/components/equihash/Cargo.toml b/components/equihash/Cargo.toml
index 9abfce822..2eb7c023d 100644
--- a/components/equihash/Cargo.toml
+++ b/components/equihash/Cargo.toml
@@ -6,7 +6,8 @@ authors = ["Jack Grigg <jack@z.cash>"]
 homepage = "https://github.com/zcash/librustzcash"
 repository = "https://github.com/zcash/librustzcash"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.1"
 
 [dependencies]
 blake2b_simd = "1"
diff --git a/components/f4jumble/CHANGELOG.md b/components/f4jumble/CHANGELOG.md
index 847ce994f..0dd3e14c9 100644
--- a/components/f4jumble/CHANGELOG.md
+++ b/components/f4jumble/CHANGELOG.md
@@ -9,3 +9,4 @@ and this library adheres to Rust's notion of
 
 ## [0.1.0] - 2022-05-11
 Initial release.
+MSRV is 1.51
diff --git a/components/f4jumble/Cargo.toml b/components/f4jumble/Cargo.toml
index b5571e388..272cfef34 100644
--- a/components/f4jumble/Cargo.toml
+++ b/components/f4jumble/Cargo.toml
@@ -12,6 +12,7 @@ repository = "https://github.com/zcash/librustzcash"
 readme = "README.md"
 license = "MIT OR Apache-2.0"
 edition = "2018"
+rust-version = "1.51"
 categories = ["encoding"]
 keywords = ["feistel"]
 
diff --git a/components/zcash_address/CHANGELOG.md b/components/zcash_address/CHANGELOG.md
index 12ac4b0a9..717393905 100644
--- a/components/zcash_address/CHANGELOG.md
+++ b/components/zcash_address/CHANGELOG.md
@@ -12,6 +12,9 @@ and this library adheres to Rust's notion of
 - `zcash_address::TryFromRawAddress`
 - `zcash_address::ZcashAddress::convert_if_network`
 
+### Changed
+- MSRV is now 1.52
+
 ### Removed
 - `zcash_address::FromAddress` (use `TryFromAddress` instead).
 
diff --git a/components/zcash_address/Cargo.toml b/components/zcash_address/Cargo.toml
index 65f1f908a..9d9bcfb4b 100644
--- a/components/zcash_address/Cargo.toml
+++ b/components/zcash_address/Cargo.toml
@@ -10,6 +10,7 @@ repository = "https://github.com/zcash/librustzcash"
 readme = "README.md"
 license = "MIT OR Apache-2.0"
 edition = "2018"
+rust-version = "1.52"
 categories = ["cryptography::cryptocurrencies", "encoding"]
 keywords = ["zcash", "address", "sapling", "unified"]
 
diff --git a/components/zcash_encoding/CHANGELOG.md b/components/zcash_encoding/CHANGELOG.md
index 847ce994f..7334e441d 100644
--- a/components/zcash_encoding/CHANGELOG.md
+++ b/components/zcash_encoding/CHANGELOG.md
@@ -7,5 +7,8 @@ and this library adheres to Rust's notion of
 
 ## [Unreleased]
 
+### Changed
+- MSRV is now 1.52
+
 ## [0.1.0] - 2022-05-11
 Initial release.
diff --git a/components/zcash_encoding/Cargo.toml b/components/zcash_encoding/Cargo.toml
index b588fc0cb..e93d55d97 100644
--- a/components/zcash_encoding/Cargo.toml
+++ b/components/zcash_encoding/Cargo.toml
@@ -10,7 +10,8 @@ homepage = "https://github.com/zcash/librustzcash"
 repository = "https://github.com/zcash/librustzcash"
 readme = "README.md"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.1"
 categories = ["cryptography::cryptocurrencies", "encoding"]
 keywords = ["zcash"]
 
diff --git a/components/zcash_encoding/src/lib.rs b/components/zcash_encoding/src/lib.rs
index 901f1a19a..8e23f7b68 100644
--- a/components/zcash_encoding/src/lib.rs
+++ b/components/zcash_encoding/src/lib.rs
@@ -10,7 +10,6 @@
 
 use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
 use nonempty::NonEmpty;
-use std::convert::TryFrom;
 use std::io::{self, Read, Write};
 use std::iter::FromIterator;
 
@@ -271,7 +270,6 @@ impl Optional {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use std::convert::{TryFrom, TryInto};
     use std::fmt::Debug;
 
     #[test]
diff --git a/components/zcash_note_encryption/Cargo.toml b/components/zcash_note_encryption/Cargo.toml
index cb225f216..de440572c 100644
--- a/components/zcash_note_encryption/Cargo.toml
+++ b/components/zcash_note_encryption/Cargo.toml
@@ -10,7 +10,8 @@ homepage = "https://github.com/zcash/librustzcash"
 repository = "https://github.com/zcash/librustzcash"
 readme = "README.md"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.1"
 categories = ["cryptography::cryptocurrencies"]
 
 [package.metadata.docs.rs]
diff --git a/components/zcash_note_encryption/src/lib.rs b/components/zcash_note_encryption/src/lib.rs
index 09ad12609..9627d05b2 100644
--- a/components/zcash_note_encryption/src/lib.rs
+++ b/components/zcash_note_encryption/src/lib.rs
@@ -24,8 +24,6 @@ extern crate alloc;
 #[cfg(feature = "alloc")]
 use alloc::vec::Vec;
 
-use core::convert::TryInto;
-
 use chacha20::{
     cipher::{NewCipher, StreamCipher, StreamCipherSeek},
     ChaCha20,
diff --git a/zcash_client_backend/Cargo.toml b/zcash_client_backend/Cargo.toml
index d2a887437..99c798de3 100644
--- a/zcash_client_backend/Cargo.toml
+++ b/zcash_client_backend/Cargo.toml
@@ -10,7 +10,8 @@ homepage = "https://github.com/zcash/librustzcash"
 repository = "https://github.com/zcash/librustzcash"
 readme = "README.md"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.1"
 
 [dependencies]
 base64 = "0.13"
diff --git a/zcash_client_backend/examples/diversify-address.rs b/zcash_client_backend/examples/diversify-address.rs
index 1071566c9..aa77e6e9a 100644
--- a/zcash_client_backend/examples/diversify-address.rs
+++ b/zcash_client_backend/examples/diversify-address.rs
@@ -1,5 +1,3 @@
-use std::convert::TryInto;
-
 use gumdrop::Options;
 use zcash_client_backend::encoding::{decode_extended_full_viewing_key, encode_payment_address};
 use zcash_primitives::{
diff --git a/zcash_client_backend/src/encoding.rs b/zcash_client_backend/src/encoding.rs
index c36e8c778..b63a4aff8 100644
--- a/zcash_client_backend/src/encoding.rs
+++ b/zcash_client_backend/src/encoding.rs
@@ -7,7 +7,6 @@
 
 use bech32::{self, Error, FromBase32, ToBase32, Variant};
 use bs58::{self, decode::Error as Bs58Error};
-use std::convert::TryInto;
 use std::fmt;
 use std::io::{self, Write};
 use zcash_primitives::{
diff --git a/zcash_client_backend/src/keys.rs b/zcash_client_backend/src/keys.rs
index dc052c8d4..5b6e4c01f 100644
--- a/zcash_client_backend/src/keys.rs
+++ b/zcash_client_backend/src/keys.rs
@@ -8,9 +8,6 @@ use zcash_primitives::{
 
 use crate::address::UnifiedAddress;
 
-#[cfg(feature = "transparent-inputs")]
-use std::convert::TryInto;
-
 #[cfg(feature = "transparent-inputs")]
 use zcash_primitives::legacy::keys::{self as legacy, IncomingViewingKey};
 
diff --git a/zcash_client_backend/src/proto.rs b/zcash_client_backend/src/proto.rs
index 4e6ec9a6e..aa4d3183a 100644
--- a/zcash_client_backend/src/proto.rs
+++ b/zcash_client_backend/src/proto.rs
@@ -1,7 +1,6 @@
 //! Generated code for handling light client protobuf structs.
 
 use ff::PrimeField;
-use std::convert::{TryFrom, TryInto};
 
 use zcash_primitives::{
     block::{BlockHash, BlockHeader},
diff --git a/zcash_client_sqlite/Cargo.toml b/zcash_client_sqlite/Cargo.toml
index 8c7555b35..4fd976663 100644
--- a/zcash_client_sqlite/Cargo.toml
+++ b/zcash_client_sqlite/Cargo.toml
@@ -10,7 +10,8 @@ homepage = "https://github.com/zcash/librustzcash"
 repository = "https://github.com/zcash/librustzcash"
 readme = "README.md"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.1"
 
 [dependencies]
 bech32 = "0.8"
diff --git a/zcash_client_sqlite/src/wallet/transact.rs b/zcash_client_sqlite/src/wallet/transact.rs
index 112dc9260..1ffa82cc6 100644
--- a/zcash_client_sqlite/src/wallet/transact.rs
+++ b/zcash_client_sqlite/src/wallet/transact.rs
@@ -1,7 +1,6 @@
 //! Functions for creating transactions.
 //!
 use rusqlite::{named_params, Row};
-use std::convert::TryInto;
 
 use ff::PrimeField;
 
diff --git a/zcash_extensions/CHANGELOG.md b/zcash_extensions/CHANGELOG.md
index 744a7b1f7..980b98cc4 100644
--- a/zcash_extensions/CHANGELOG.md
+++ b/zcash_extensions/CHANGELOG.md
@@ -7,3 +7,4 @@ and this library adheres to Rust's notion of
 
 ## [Unreleased]
 Initial release.
+MSRV is 1.56.1
diff --git a/zcash_extensions/Cargo.toml b/zcash_extensions/Cargo.toml
index 49c3605c9..c92dd9e17 100644
--- a/zcash_extensions/Cargo.toml
+++ b/zcash_extensions/Cargo.toml
@@ -6,7 +6,8 @@ authors = ["Jack Grigg <jack@z.cash>", "Kris Nuttycombe <kris@z.cash>"]
 homepage = "https://github.com/zcash/librustzcash"
 repository = "https://github.com/zcash/librustzcash"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.1"
 
 [dependencies]
 blake2b_simd = "1"
diff --git a/zcash_extensions/src/transparent/demo.rs b/zcash_extensions/src/transparent/demo.rs
index f0f7966f8..e9150823b 100644
--- a/zcash_extensions/src/transparent/demo.rs
+++ b/zcash_extensions/src/transparent/demo.rs
@@ -18,8 +18,6 @@
 //! - `tx_b`: `[ TzeIn(tx_a, preimage_1) -> TzeOut(value, hash_2) ]`
 //! - `tx_c`: `[ TzeIn(tx_b, preimage_2) -> [any output types...] ]`
 
-use std::convert::TryFrom;
-use std::convert::TryInto;
 use std::fmt;
 use std::ops::{Deref, DerefMut};
 
diff --git a/zcash_history/Cargo.toml b/zcash_history/Cargo.toml
index f5b511ad0..2cec07fdb 100644
--- a/zcash_history/Cargo.toml
+++ b/zcash_history/Cargo.toml
@@ -2,7 +2,8 @@
 name = "zcash_history"
 version = "0.3.0"
 authors = ["NikVolf <nikvolf@gmail.com>"]
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.1"
 license = "MIT/Apache-2.0"
 documentation = "https://docs.rs/zcash_history/"
 description = "Library for Zcash blockchain history tools"
diff --git a/zcash_primitives/Cargo.toml b/zcash_primitives/Cargo.toml
index dddcc0ef7..c57dd4670 100644
--- a/zcash_primitives/Cargo.toml
+++ b/zcash_primitives/Cargo.toml
@@ -10,7 +10,8 @@ homepage = "https://github.com/zcash/librustzcash"
 repository = "https://github.com/zcash/librustzcash"
 readme = "README.md"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.1"
 categories = ["cryptography::cryptocurrencies"]
 
 [package.metadata.docs.rs]
diff --git a/zcash_primitives/src/legacy/keys.rs b/zcash_primitives/src/legacy/keys.rs
index 6a29ddb20..fa22cca21 100644
--- a/zcash_primitives/src/legacy/keys.rs
+++ b/zcash_primitives/src/legacy/keys.rs
@@ -2,7 +2,6 @@ use hdwallet::{ExtendedPrivKey, ExtendedPubKey, KeyIndex};
 use ripemd::Digest as RipemdDigest;
 use secp256k1::PublicKey;
 use sha2::{Digest as Sha2Digest, Sha256};
-use std::convert::TryInto;
 
 use crate::{consensus, keys::prf_expand_vec, zip32::AccountId};
 
diff --git a/zcash_primitives/src/memo.rs b/zcash_primitives/src/memo.rs
index 7f8b38597..b9df2ab05 100644
--- a/zcash_primitives/src/memo.rs
+++ b/zcash_primitives/src/memo.rs
@@ -1,7 +1,6 @@
 //! Structs for handling encrypted memos.
 
 use std::cmp::Ordering;
-use std::convert::{TryFrom, TryInto};
 use std::error;
 use std::fmt;
 use std::ops::Deref;
@@ -275,7 +274,6 @@ impl str::FromStr for Memo {
 
 #[cfg(test)]
 mod tests {
-    use std::convert::TryInto;
     use std::str::FromStr;
 
     use super::{Error, Memo, MemoBytes};
diff --git a/zcash_primitives/src/merkle_tree.rs b/zcash_primitives/src/merkle_tree.rs
index 7a5f41213..73471f3d9 100644
--- a/zcash_primitives/src/merkle_tree.rs
+++ b/zcash_primitives/src/merkle_tree.rs
@@ -7,7 +7,6 @@ use incrementalmerkletree::{
     Altitude,
 };
 use std::collections::VecDeque;
-use std::convert::TryFrom;
 use std::io::{self, Read, Write};
 use std::iter::repeat;
 use zcash_encoding::{Optional, Vector};
@@ -620,7 +619,6 @@ impl<Node: Hashable> MerklePath<Node> {
 mod tests {
     use incrementalmerkletree::bridgetree::Frontier;
     use proptest::prelude::*;
-    use std::convert::TryInto;
     use std::io::{self, Read, Write};
 
     use crate::sapling::{testing::arb_node, Node};
diff --git a/zcash_primitives/src/merkle_tree/incremental.rs b/zcash_primitives/src/merkle_tree/incremental.rs
index b5ceaaed7..daf7083c2 100644
--- a/zcash_primitives/src/merkle_tree/incremental.rs
+++ b/zcash_primitives/src/merkle_tree/incremental.rs
@@ -1,7 +1,6 @@
 //! Implementations of serialization and parsing for Orchard note commitment trees.
 
 use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
-use std::convert::{TryFrom, TryInto};
 use std::io::{self, Read, Write};
 
 use incrementalmerkletree::{
diff --git a/zcash_primitives/src/sapling.rs b/zcash_primitives/src/sapling.rs
index f13a9a68e..267fb9cab 100644
--- a/zcash_primitives/src/sapling.rs
+++ b/zcash_primitives/src/sapling.rs
@@ -17,7 +17,6 @@ use incrementalmerkletree::{self, Altitude};
 use lazy_static::lazy_static;
 use rand_core::{CryptoRng, RngCore};
 use std::array::TryFromSliceError;
-use std::convert::{TryFrom, TryInto};
 use std::io::{self, Read, Write};
 use subtle::{Choice, ConstantTimeEq};
 
@@ -526,7 +525,6 @@ impl Note {
 pub mod testing {
     use proptest::prelude::*;
     use std::cmp::min;
-    use std::convert::TryFrom;
 
     use crate::{
         transaction::components::amount::MAX_MONEY, zip32::testing::arb_extended_spending_key,
diff --git a/zcash_primitives/src/sapling/keys.rs b/zcash_primitives/src/sapling/keys.rs
index db0c53928..eeb2d4042 100644
--- a/zcash_primitives/src/sapling/keys.rs
+++ b/zcash_primitives/src/sapling/keys.rs
@@ -4,7 +4,6 @@
 //!
 //! [section 4.2.2]: https://zips.z.cash/protocol/protocol.pdf#saplingkeycomponents
 
-use std::convert::TryInto;
 use std::io::{self, Read, Write};
 
 use crate::{
diff --git a/zcash_primitives/src/sapling/note_encryption.rs b/zcash_primitives/src/sapling/note_encryption.rs
index 182f5a523..fcb2064f2 100644
--- a/zcash_primitives/src/sapling/note_encryption.rs
+++ b/zcash_primitives/src/sapling/note_encryption.rs
@@ -5,7 +5,6 @@ use ff::PrimeField;
 use group::{cofactor::CofactorGroup, GroupEncoding};
 use jubjub::{AffinePoint, ExtendedPoint};
 use rand_core::RngCore;
-use std::convert::TryInto;
 
 use zcash_note_encryption::{
     try_compact_note_decryption, try_note_decryption, try_output_recovery_with_ock,
@@ -474,7 +473,6 @@ mod tests {
     use group::{cofactor::CofactorGroup, GroupEncoding};
     use rand_core::OsRng;
     use rand_core::{CryptoRng, RngCore};
-    use std::convert::TryInto;
 
     use zcash_note_encryption::{
         batch, EphemeralKeyBytes, NoteEncryption, OutgoingCipherKey, ENC_CIPHERTEXT_SIZE,
diff --git a/zcash_primitives/src/transaction/builder.rs b/zcash_primitives/src/transaction/builder.rs
index 81abaffb7..d2dacc655 100644
--- a/zcash_primitives/src/transaction/builder.rs
+++ b/zcash_primitives/src/transaction/builder.rs
@@ -266,7 +266,8 @@ impl<'a, P: consensus::Parameters, R: RngCore> Builder<'a, P, R> {
                 .ok_or(Error::InvalidAmount)?,
         ];
 
-        IntoIterator::into_iter(&value_balances)
+        value_balances
+            .into_iter()
             .sum::<Option<_>>()
             .ok_or(Error::InvalidAmount)
     }
diff --git a/zcash_primitives/src/transaction/components/sapling.rs b/zcash_primitives/src/transaction/components/sapling.rs
index 9d22ce5e4..1639bc930 100644
--- a/zcash_primitives/src/transaction/components/sapling.rs
+++ b/zcash_primitives/src/transaction/components/sapling.rs
@@ -1,5 +1,4 @@
 use core::fmt::Debug;
-use std::convert::TryInto;
 
 use ff::PrimeField;
 use group::GroupEncoding;
@@ -429,7 +428,6 @@ pub mod testing {
     use proptest::collection::vec;
     use proptest::prelude::*;
     use rand::{rngs::StdRng, SeedableRng};
-    use std::convert::TryFrom;
 
     use crate::{
         constants::{SPENDING_KEY_GENERATOR, VALUE_COMMITMENT_RANDOMNESS_GENERATOR},
diff --git a/zcash_primitives/src/transaction/sighash.rs b/zcash_primitives/src/transaction/sighash.rs
index d37b0ed14..4de02c63f 100644
--- a/zcash_primitives/src/transaction/sighash.rs
+++ b/zcash_primitives/src/transaction/sighash.rs
@@ -1,6 +1,5 @@
 use crate::legacy::Script;
 use blake2b_simd::Hash as Blake2bHash;
-use std::convert::TryInto;
 
 use super::{
     components::{
diff --git a/zcash_primitives/src/transaction/sighash_v5.rs b/zcash_primitives/src/transaction/sighash_v5.rs
index 24aa033cf..aebe5f919 100644
--- a/zcash_primitives/src/transaction/sighash_v5.rs
+++ b/zcash_primitives/src/transaction/sighash_v5.rs
@@ -17,9 +17,6 @@ use crate::transaction::{
     Authorization, TransactionData, TransparentDigests, TxDigests,
 };
 
-#[cfg(feature = "zfuture")]
-use std::convert::TryInto;
-
 #[cfg(feature = "zfuture")]
 use zcash_encoding::{CompactSize, Vector};
 
diff --git a/zcash_primitives/src/zip32.rs b/zcash_primitives/src/zip32.rs
index 66f6ceb99..6e4767d19 100644
--- a/zcash_primitives/src/zip32.rs
+++ b/zcash_primitives/src/zip32.rs
@@ -6,7 +6,6 @@ use aes::Aes256;
 use blake2b_simd::Params as Blake2bParams;
 use byteorder::{ByteOrder, LittleEndian, ReadBytesExt, WriteBytesExt};
 use fpe::ff1::{BinaryNumeralString, FF1};
-use std::convert::TryInto;
 use std::ops::AddAssign;
 use subtle::{Choice, ConditionallySelectable};
 
diff --git a/zcash_proofs/Cargo.toml b/zcash_proofs/Cargo.toml
index 47f7518fd..750e41e30 100644
--- a/zcash_proofs/Cargo.toml
+++ b/zcash_proofs/Cargo.toml
@@ -9,7 +9,8 @@ homepage = "https://github.com/zcash/librustzcash"
 repository = "https://github.com/zcash/librustzcash"
 readme = "README.md"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.1"
 categories = ["cryptography::cryptocurrencies"]
 
 [package.metadata.docs.rs]