diff --git a/Cargo.lock b/Cargo.lock
index 01e5232..eb99719 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -20,7 +20,7 @@ checksum = "04097e08a47d9ad181c2e1f4a5fabc9ae06ce8839a333ba9a949bcb0d31fd2a3"
 dependencies = [
  "cipher",
  "cpubits",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "zeroize",
 ]
 
@@ -47,7 +47,7 @@ checksum = "5cc32af0fde8095068147d01a5dfbc0e0b06307924138d992df7c8f18d34c585"
 dependencies = [
  "base64ct",
  "blake2",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "password-hash",
 ]
 
@@ -153,7 +153,7 @@ checksum = "c536927023d1c432e6e23a25ef45f6756094eac2ab460db5fb17a772acdfd312"
 dependencies = [
  "cfg-if",
  "cipher",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "rand_core",
  "zeroize",
 ]
@@ -197,6 +197,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "crypto-bigint"
 version = "0.7.0-rc.25"
@@ -260,7 +269,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "335f1947f241137a14106b6f5acc5918a5ede29c9d71d3f2cb1678d5075d9fc3"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "curve25519-dalek-derive",
  "digest",
  "fiat-crypto",
@@ -538,11 +547,11 @@ dependencies = [
 
 [[package]]
 name = "poly1305"
-version = "0.9.0-rc.5"
+version = "0.9.0-rc.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "518693a4015fbfd281debf35bcac145ba2e180ae325ec855fdb405be0b2971fb"
+checksum = "19feddcbdf17fad33f40041c7f9e768faf19455f32a6d52ba1b8b65ffc7b1cae"
 dependencies = [
- "cpufeatures",
+ "cpufeatures 0.3.0",
  "universal-hash",
  "zeroize",
 ]
@@ -554,7 +563,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "63641a86fddf4b5274f31c43734458ec7acd3133016dbaa37e4e247e1e9acd46"
 dependencies = [
  "cpubits",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "universal-hash",
 ]
 
@@ -727,7 +736,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3b167252f3c126be0d8926639c4c4706950f01445900c4b3db0fd7e89fcb750a"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "digest",
 ]
 
@@ -738,7 +747,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c5f3b1e2dc8aad28310d8410bd4d7e180eca65fca176c52ab00d364475d0024"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "digest",
 ]
 
diff --git a/ssh-cipher/Cargo.toml b/ssh-cipher/Cargo.toml
index 91d8d92..e2bf107 100644
--- a/ssh-cipher/Cargo.toml
+++ b/ssh-cipher/Cargo.toml
@@ -30,7 +30,7 @@ cbc = { version = "0.2.0-rc.3", optional = true }
 ctr = { version = "0.10.0-rc.3", optional = true, default-features = false }
 chacha20 = { version = "0.10.0-rc.10", optional = true, default-features = false, features = ["cipher", "legacy"] }
 des = { version = "0.9.0-rc.3", optional = true, default-features = false }
-poly1305 = { version = "0.9.0-rc.5", optional = true, default-features = false }
+poly1305 = { version = "0.9.0-rc.6", optional = true, default-features = false }
 subtle = { version = "2", optional = true, default-features = false }
 zeroize = { version = "1", optional = true, default-features = false }