diff --git a/Cargo.toml b/Cargo.toml
index 688d6e98..3b978a3f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -201,6 +201,9 @@ lazy_static = { git = "https://github.com/rust-lang-nursery/lazy-static.rs", rev
 option-ext = { path = "patches/option-ext" }
 directories-next = { path = "patches/directories-next" }
 
+# Patch from a fork back to upstream
+parity-bip39 = { path = "patches/parity-bip39" }
+
 # Patch to include `FromUniformBytes<64>` over `Scalar`
 k256 = { git = "https://github.com/kayabaNerve/elliptic-curves", rev = "4994c9ab163781a88cd4a49beae812a89a44e8c3" }
 p256 = { git = "https://github.com/kayabaNerve/elliptic-curves", rev = "4994c9ab163781a88cd4a49beae812a89a44e8c3" }
diff --git a/deny.toml b/deny.toml
index 4bc0837f..e28d5ffb 100644
--- a/deny.toml
+++ b/deny.toml
@@ -152,6 +152,7 @@ allow-git = [
   "https://github.com/kayabaNerve/elliptic-curves",
   "https://github.com/monero-oxide/monero-oxide",
   "https://github.com/kayabaNerve/monero-oxide",
+  "https://github.com/rust-bitcoin/rust-bip39",
   "https://github.com/rust-rocksdb/rust-rocksdb",
   "https://github.com/serai-dex/patch-polkadot-sdk",
 ]
diff --git a/patches/parity-bip39/Cargo.toml b/patches/parity-bip39/Cargo.toml
new file mode 100644
index 00000000..3e444d8c
--- /dev/null
+++ b/patches/parity-bip39/Cargo.toml
@@ -0,0 +1,30 @@
+[package]
+name = "parity-bip39"
+version = "2.99.99"
+description = "Patch back to the upstream library"
+license = "MIT"
+repository = "https://github.com/serai-dex/serai/tree/develop/patches/parity-bip39"
+authors = ["Luke Parker <lukeparker5132@gmail.com>"]
+keywords = []
+edition = "2021"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[workspace]
+
+[dependencies]
+bip39 = { git = "https://github.com/rust-bitcoin/rust-bip39", commit = "f735e2559f30049f6738d1bf68c69a0b7bd7b858", default-features = false }
+
+[features]
+default = ["bip39/default"]
+alloc = ["bip39/alloc"]
+std = ["bip39/std"]
+
+unicode-normalization = ["bip39/unicode-normalization"]
+all-languages = ["bip39/all-languages"]
+
+zeroize = ["bip39/zeroize"]
+rand_core = ["bip39/rand_core"]
+rand = ["bip39/rand"]
diff --git a/patches/parity-bip39/src/lib.rs b/patches/parity-bip39/src/lib.rs
new file mode 100644
index 00000000..b9935270
--- /dev/null
+++ b/patches/parity-bip39/src/lib.rs
@@ -0,0 +1,3 @@
+#![cfg_attr(not(feature = "std"), no_std)]
+
+pub use bip39::*;