diff --git a/Cargo.lock b/Cargo.lock
index 97c7596b..3c337048 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -477,11 +477,11 @@ 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 0.2.17",
+ "cpufeatures 0.3.0",
  "universal-hash",
 ]
 
diff --git a/chacha20poly1305/Cargo.toml b/chacha20poly1305/Cargo.toml
index 8aa3e504..f005520e 100644
--- a/chacha20poly1305/Cargo.toml
+++ b/chacha20poly1305/Cargo.toml
@@ -23,7 +23,7 @@ rust-version = "1.85"
 aead = { version = "0.6.0-rc.10", default-features = false }
 chacha20 = { version = "0.10", default-features = false, features = ["xchacha"] }
 cipher = "0.5"
-poly1305 = "0.9.0-rc.5"
+poly1305 = "0.9.0-rc.6"
 zeroize = { version = "1.8", optional = true, default-features = false }
 
 [dev-dependencies]