failed to resolve: use of undeclared crate or module `secp256k1`

[peter-jim]

when I use rust-web3 to my project . I cant import secp256k1. but Cargo.toml is work.

[dependencies] secp256k1 = { version = "0.22.1", features = ["recovery"], optional = true } once_cell = { version = "1.8.0", optional = true }

---

use secp256k1::key::SecretKey;

show error failed to resolve: use of undeclared crate or module secp256k1 use of undeclared crate or module secp256k1rustcE0433

[palinko91]

For me the transaction signing works with older crates only. Try web3 = "=0.17.0" secp256k1 = "=0.20.3"

[peter-jim]

thanks, I solved the problem.