diff --git a/Cargo.lock b/Cargo.lock
index c0016df3..127ad26a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -191,9 +191,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chacha20"
-version = "0.10.0-rc.1"
+version = "0.10.0-rc.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6715ea8ef83a13ae76da6239f97762debdf7f5fa45a638dc9c585423a9cd4834"
+checksum = "9bd162f2b8af3e0639d83f28a637e4e55657b7a74508dba5a9bf4da523d5c9e9"
 dependencies = [
  "cfg-if",
  "cipher",
diff --git a/chacha20poly1305/Cargo.toml b/chacha20poly1305/Cargo.toml
index 12be429b..a4fb60a6 100644
--- a/chacha20poly1305/Cargo.toml
+++ b/chacha20poly1305/Cargo.toml
@@ -21,7 +21,7 @@ rust-version = "1.85"
 
 [dependencies]
 aead = { version = "0.6.0-rc.1", default-features = false }
-chacha20 = { version = "0.10.0-rc.1", default-features = false, features = ["xchacha"] }
+chacha20 = { version = "0.10.0-rc.2", default-features = false, features = ["xchacha"] }
 cipher = "0.5.0-rc.1"
 poly1305 = "0.9.0-rc.2"
 zeroize = { version = "1.8", optional = true, default-features = false }