Imports & Dependencies

Miden VM dependencies move from 0.22 to 0.23 and miden-crypto from 0.23 to 0.25. The protocol crates move from 0.14 to 0.15.3 and miden-client from 0.14 to 0.15, and the client's MSRV is now Rust 1.93. Because the native hash and the MAST/serialization formats changed, 0.14 artifacts (accounts, notes, proofs, serialized stores, .masl/.masp packages) do not round-trip.

Quick Fix

Cargo.toml

# Replace these
miden-client              = "0.14"
miden-client-sqlite-store = "0.14"
miden-protocol            = "0.14"
miden-standards           = "0.14"
miden-tx                  = "0.14"
miden-assembly            = "0.22"
miden-core                = "0.22"
miden-core-lib            = "0.22"
miden-processor           = "0.22"
miden-prover              = "0.22"
miden-crypto              = "0.23"

# With these
miden-client              = "0.15"
miden-client-sqlite-store = "0.15"
miden-protocol            = "0.15.3"
miden-standards           = "0.15.3"
miden-tx                  = "0.15.3"
miden-assembly            = "0.23"
miden-core                = "0.23"
miden-core-lib            = "0.23"
miden-processor           = "0.23"
miden-prover              = "0.23"
miden-crypto              = "0.25"

---

Summary

Every Miden crate moves up a minor: the protocol crates (miden-protocol, miden-standards, miden-tx, miden-testing) go 0.14 → 0.15.3, the VM crates (miden-assembly, miden-core, miden-core-lib, miden-processor, miden-prover) go 0.22 → 0.23, and miden-crypto goes 0.23 → 0.25. miden-client and miden-client-sqlite-store go 0.14 → 0.15; the Web SDK packages go 0.14 → 0.15. The client's MSRV is Rust 1.93 (the base crates build on 1.90+).

The prover crate is miden-prover in this line — it is not miden-prove. Keep depending on miden-prover.

Because the native hash and the MAST/serialization formats changed upstream, 0.14 artifacts (accounts, notes, proofs, serialized stores, .masl/.masp packages) do not round-trip. Re-assemble from source and re-sync into a fresh store.

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Version Bumps

Crate	v0.14	v0.15
miden-client	0.14	0.15
miden-client-sqlite-store	0.14	0.15
miden-protocol	0.14	0.15.3
miden-standards	0.14	0.15.3
miden-tx	0.14	0.15.3
miden-assembly	0.22	0.23
miden-core	0.22	0.23
miden-core-lib	0.22	0.23
miden-processor	0.22	0.23
miden-prover	0.22	0.23
miden-crypto	0.23	0.25

---

Affected Code

Cargo.toml:

- miden-client              = "0.14"
- miden-client-sqlite-store = "0.14"
- miden-protocol            = "0.14"
- miden-standards           = "0.14"
- miden-tx                  = "0.14"
- miden-assembly            = "0.22"
- miden-core                = "0.22"
- miden-core-lib            = "0.22"
- miden-processor           = "0.22"
- miden-prover              = "0.22"
- miden-crypto              = "0.23"
+ miden-client              = "0.15"
+ miden-client-sqlite-store = "0.15"
+ miden-protocol            = "0.15.3"
+ miden-standards           = "0.15.3"
+ miden-tx                  = "0.15.3"
+ miden-assembly            = "0.23"
+ miden-core                = "0.23"
+ miden-core-lib            = "0.23"
+ miden-processor           = "0.23"
+ miden-prover              = "0.23"
+ miden-crypto              = "0.25"

package.json (Web SDK):

- "@miden-sdk/miden-sdk": "^0.14.0",
- "@miden-sdk/react": "^0.14.0",
- "miden-idxdb-store": "^0.14.0"
+ "@miden-sdk/miden-sdk": "^0.15.0",
+ "@miden-sdk/react": "^0.15.0",
+ "miden-idxdb-store": "^0.15.0"

---

MSRV (Minimum Supported Rust Version)

If you depend on miden-client, update your rust-toolchain.toml to Rust 1.93 (the base crates build on 1.90+):

rust-toolchain.toml

[toolchain]
channel = "1.93"

---

Migration Steps

1. Bump every Miden crate per the table above and run cargo update to pull the matching miden-crypto 0.25 and VM 0.23 minors.
2. Do not rename miden-prover to miden-prove.
3. Set the client toolchain to at least Rust 1.93.
4. Bump @miden-sdk/miden-sdk, @miden-sdk/react, and miden-idxdb-store to ^0.15.0 together — a mix of 0.14/0.15 packages will not link against the shared WASM ABI.
5. Point the client at a 0.15 node (the protocol version is negotiated at connect; a mismatch is rejected), and re-sync into a fresh store.

---

Common Errors

Error Message	Cause	Solution
failed to select a version for miden-prove	Crate not renamed in 0.15	Keep depending on miden-prover.
MastForest deserialization failed: unexpected version	MAST wire format bumped to 0.0.3	Re-assemble every .masl/.masp from source under 0.23.
node version negotiation failure	0.15 client against a 0.14 node	Upgrade the node to 0.15.