+bitcoin = { version = "0.27", default-features = false, features = ["secp-recovery"] }
+# TODO remove this once rust-bitcoin PR #637 is released
+secp256k1 = { version = "0.20.2", default-features = false, features = ["alloc"] }
+
+hashbrown = { version = "0.11", optional = true }
+hex = { version = "0.4", optional = true }
+regex = { version = "0.2.11", optional = true }
+backtrace = { version = "0.3", optional = true }