diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 39f9e7b..88d1b5e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -43,7 +43,7 @@ jobs:
     strategy:
       matrix:
         target:
-          - wasm32-wasi
+          - wasm32-wasip1
           - thumbv6m-none-eabi
           - thumbv7em-none-eabihf
     steps:
diff --git a/Cargo.lock b/Cargo.lock
index cffd341..ef1c45d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,12 +1,11 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "ff"
 version = "0.14.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d42dd26f5790eda47c1a2158ea4120e32c35ddc9a7743c98a292accc01b54ef3"
+source = "git+https://github.com/tarcieri/ff?branch=rand_core%2Fv0.10#810bfd0c67ee31663b696e6af26d1b2cea13c409"
 dependencies = [
  "rand_core",
  "subtle",
@@ -30,45 +29,26 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d97bbf43eb4f088f8ca469930cde17fa036207c9a5e02ccc5107c4e8b17c964"
 
-[[package]]
-name = "proc-macro2"
-version = "1.0.95"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02b3e5e68a3a1a02aad3ec490a98007cbc13c37cbe84a3cd7b8e406d76e7f778"
-dependencies = [
- "unicode-ident",
-]
-
-[[package]]
-name = "quote"
-version = "1.0.40"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1885c039570dc00dcb4ff087a89e185fd56bae234ddc7f056a945bf36467248d"
-dependencies = [
- "proc-macro2",
-]
-
 [[package]]
 name = "rand"
-version = "0.9.0"
+version = "0.10.0-rc.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3779b94aeb87e8bd4e834cee3650289ee9e0d5677f976ecdb6d219e5f4f6cd94"
+checksum = "9a8cd8be2e7e2fd2ee3e09045798e65c906682ec9f16293defc4790dd775d5a3"
 dependencies = [
  "rand_core",
- "zerocopy",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.9.3"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99d9a13982dcf210057a8a78572b2217b667c3beacbf3a0d8b454f6f82837d38"
+checksum = "0c8d0fd677905edcbeedbf2edb6494d676f0e98d54d5cf9bda0b061cb8fb8aba"
 
 [[package]]
 name = "rand_xorshift"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "513962919efc330f829edb2535844d1b912b0fbe2ca165d613e4e8788bb05a5a"
+checksum = "60aa6af80be32871323012e02e6e65f8a7cc7890931ae421d217ad8fe0df2ccf"
 dependencies = [
  "rand_core",
 ]
@@ -78,40 +58,3 @@ name = "subtle"
 version = "2.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
-
-[[package]]
-name = "syn"
-version = "2.0.100"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b09a44accad81e1ba1cd74a32461ba89dee89095ba17b32f5d03683b1b1fc2a0"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
-[[package]]
-name = "unicode-ident"
-version = "1.0.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
-
-[[package]]
-name = "zerocopy"
-version = "0.8.24"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2586fea28e186957ef732a5f8b3be2da217d65c5969d4b1e17f973ebbe876879"
-dependencies = [
- "zerocopy-derive",
-]
-
-[[package]]
-name = "zerocopy-derive"
-version = "0.8.24"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a996a8f63c5c4448cd959ac1bab0aaa3306ccfd060472f85943ee0750f0169be"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
diff --git a/Cargo.toml b/Cargo.toml
index a153e74..5b396a4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ authors = [
     "Jack Grigg <jack@z.cash>",
 ]
 edition = "2021"
-rust-version = "1.63"
+rust-version = "1.85"
 readme = "README.md"
 license = "MIT/Apache-2.0"
 
@@ -17,9 +17,9 @@ repository = "https://github.com/zkcrypto/group"
 
 [dependencies]
 ff = { version = "=0.14.0-pre.0", default-features = false }
-rand = { version = "0.9", optional = true, default-features = false }
-rand_core = { version = "0.9", default-features = false }
-rand_xorshift = { version = "0.4", optional = true }
+rand = { version = "0.10.0-rc.9", optional = true, default-features = false }
+rand_core = { version = "0.10", default-features = false }
+rand_xorshift = { version = "0.5", optional = true }
 subtle = { version = "2.2.1", default-features = false }
 
 # Crate for exposing the dynamic memory usage of the w-NAF structs.
@@ -33,3 +33,6 @@ wnaf-memuse = ["alloc", "memuse"]
 
 [badges]
 maintenance = { status = "actively-developed" }
+
+[patch.crates-io]
+ff = { git = "https://github.com/tarcieri/ff", branch = "rand_core/v0.10" }
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 3eebdfe..efd3308 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.63.0"
+channel = "1.85.0"
 components = [ "clippy", "rustfmt" ]
diff --git a/src/lib.rs b/src/lib.rs
index cd3cf5e..d0c9b10 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -14,7 +14,7 @@ use core::fmt;
 use core::iter::Sum;
 use core::ops::{Add, AddAssign, Mul, MulAssign, Neg, Sub, SubAssign};
 use ff::PrimeField;
-use rand_core::{RngCore, TryRngCore};
+use rand_core::{Rng, TryRng};
 use subtle::{Choice, CtOption};
 
 pub mod cofactor;
@@ -77,7 +77,7 @@ pub trait Group:
     /// this group.
     ///
     /// This function is non-deterministic, and samples from the user-provided RNG.
-    fn random<R: RngCore + ?Sized>(rng: &mut R) -> Self {
+    fn random<R: Rng + ?Sized>(rng: &mut R) -> Self {
         Self::try_from_rng(rng)
             .map_err(|e: Infallible| e)
             .expect("Infallible failed")
@@ -92,7 +92,7 @@ pub trait Group:
     /// this group.
     ///
     /// This function is non-deterministic, and samples from the user-provided RNG.
-    fn try_from_rng<R: TryRngCore + ?Sized>(rng: &mut R) -> Result<Self, R::Error>;
+    fn try_from_rng<R: TryRng + ?Sized>(rng: &mut R) -> Result<Self, R::Error>;
 
     /// Returns the additive identity, also known as the "neutral element".
     fn identity() -> Self;