diff --git a/Cargo.lock b/Cargo.lock
index 4bad827..f68fbf3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -531,9 +531,9 @@ dependencies = [
 
 [[package]]
 name = "poly1305"
-version = "0.9.0-rc.3"
+version = "0.9.0-rc.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9c0749ae91cfe6e68c77c4d48802d9720ee06aed3f7100a38975fb0962d50bc"
+checksum = "b54ecc48420a43ccac4e81088bc994e02ded1381a82564a982940966c3a9bd1c"
 dependencies = [
  "cpufeatures",
  "universal-hash",
@@ -856,9 +856,9 @@ checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"
 
 [[package]]
 name = "universal-hash"
-version = "0.6.0-rc.4"
+version = "0.6.0-rc.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0386f227888b17b65d3e38219a7d41185035471300855c285667811907bb1677"
+checksum = "82084f2919885ea910502c74f0a362827aaad3d28d142ca97448bfb39c7e271a"
 dependencies = [
  "crypto-common",
  "subtle",
diff --git a/ssh-cipher/Cargo.toml b/ssh-cipher/Cargo.toml
index 1e979df..bdd1dac 100644
--- a/ssh-cipher/Cargo.toml
+++ b/ssh-cipher/Cargo.toml
@@ -30,7 +30,7 @@ cbc = { version = "0.2.0-rc.2", optional = true }
 ctr = { version = "0.10.0-rc.2", optional = true, default-features = false }
 chacha20 = { version = "0.10.0-rc.9", optional = true, default-features = false, features = ["cipher", "legacy"] }
 des = { version = "0.9.0-rc.2", optional = true, default-features = false }
-poly1305 = { version = "0.9.0-rc.3", optional = true, default-features = false }
+poly1305 = { version = "0.9.0-rc.4", optional = true, default-features = false }
 subtle = { version = "2", optional = true, default-features = false }
 zeroize = { version = "1", optional = true, default-features = false }