diff --git a/Cargo.lock b/Cargo.lock
index 6ffae27..652a415 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -145,9 +145,9 @@ version = "0.2.0-rc.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b0b8ce8218c97789f16356e7896b3714f26c2ee1079b79c0b7ae7064bb9089fa"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.15",
  "hybrid-array",
- "rand_core",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
@@ -212,7 +212,19 @@ checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "wasi 0.11.0+wasi-snapshot-preview1",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43a49c392881ce6d5c3b8cb70f98717b7c07aabbdff06687b9030dbfbe2725f8"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi 0.13.3+wasi-0.2.2",
+ "windows-targets",
 ]
 
 [[package]]
@@ -389,7 +401,7 @@ dependencies = [
  "cbc",
  "der",
  "pbkdf2",
- "rand_core",
+ "rand_core 0.6.4",
  "scrypt",
  "sha2",
  "spki",
@@ -402,7 +414,7 @@ source = "git+https://github.com/RustCrypto/formats.git#896142c4aa4c3571eded2dba
 dependencies = [
  "der",
  "pkcs5",
- "rand_core",
+ "rand_core 0.6.4",
  "spki",
 ]
 
@@ -445,7 +457,7 @@ dependencies = [
  "lazy_static",
  "num-traits",
  "rand",
- "rand_chacha",
+ "rand_chacha 0.3.1",
  "rand_xorshift",
  "regex-syntax",
  "rusty-fork",
@@ -475,8 +487,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
  "libc",
- "rand_chacha",
- "rand_core",
+ "rand_chacha 0.3.1",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
@@ -486,7 +498,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.6.4",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.9.0",
 ]
 
 [[package]]
@@ -495,7 +517,17 @@ version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.15",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b08f3c9802962f7e1b25113931d94f43ed9725bebc59db9d0c3e9a23b67e15ff"
+dependencies = [
+ "getrandom 0.3.1",
+ "zerocopy",
 ]
 
 [[package]]
@@ -504,7 +536,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d25bf25ec5ae4a3f1b92f929810509a2f53d7dca2f50b794ff57e3face536c8f"
 dependencies = [
- "rand_core",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
@@ -528,8 +560,8 @@ dependencies = [
  "pkcs8",
  "proptest",
  "rand",
- "rand_chacha",
- "rand_core",
+ "rand_chacha 0.9.0",
+ "rand_core 0.6.4",
  "rand_xorshift",
  "serde",
  "serde_test",
@@ -667,7 +699,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "054d71959c7051b9042c26af337f05cc930575ed2604d7d3ced3158383e59734"
 dependencies = [
  "digest",
- "rand_core",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
@@ -764,6 +796,15 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
+[[package]]
+name = "wasi"
+version = "0.13.3+wasi-0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26816d2e1a4a36a2940b96c5296ce403917633dff8f3440e9b236ed6f6bacad2"
+dependencies = [
+ "wit-bindgen-rt",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"
@@ -837,6 +878,35 @@ version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bec47e5bfd1bff0eeaf6d8b485cc1074891a197ab4225d504cb7a1ab88b02bf0"
 
+[[package]]
+name = "wit-bindgen-rt"
+version = "0.33.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3268f3d866458b787f390cf61f4bbb563b922d091359f9608842999eaee3943c"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a367f292d93d4eab890745e75a778da40909cab4d6ff8173693812f79c4a2468"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3931cb58c62c13adec22e38686b559c86a30565e16ad6e8510a337cedc611e1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "zeroize"
 version = "1.8.1"
diff --git a/Cargo.toml b/Cargo.toml
index e67140d..6c6cbb9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,7 +38,7 @@ hex-literal = "0.4.1"
 proptest = "1"
 serde_test = "1.0.89"
 rand_xorshift = "0.3"
-rand_chacha = "0.3"
+rand_chacha = "0.9"
 rand = "0.8"
 rand_core = { version = "0.6", default-features = false }
 sha1 = { version = "=0.11.0-pre.4", default-features = false, features = ["oid"] }