[dependencies]
bitcoin = { version = "0.29.0", default-features = false, features = ["secp-recovery"] }
-hashbrown = { version = "0.11", optional = true }
+hashbrown = { version = "0.8", optional = true }
hex = { version = "0.4", optional = true }
regex = { version = "1.5.6", optional = true }
backtrace = { version = "0.3", optional = true }