diff --git a/Cargo.lock b/Cargo.lock
index f80f797..2df199d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -147,9 +147,9 @@ checksum = "2fd1289c04a9ea8cb22300a459a72a385d7c73d3259e2ed7dcb2af674838cfa9"
 
 [[package]]
 name = "chacha20"
-version = "0.10.0-rc.5"
+version = "0.10.0-rc.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99cbf41c6ec3c4b9eaf7f8f5c11a72cd7d3aa0428125c20d5ef4d09907a0f019"
+checksum = "f895fb33c1ad22da4bc79d37c0bddff8aee2ba4575705345eb73b8ffbc386074"
 dependencies = [
  "cfg-if",
  "cipher",
@@ -574,9 +574,9 @@ dependencies = [
 
 [[package]]
 name = "rand_core"
-version = "0.10.0-rc-2"
+version = "0.10.0-rc-3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "104a23e4e8b77312a823b6b5613edbac78397e2f34320bc7ac4277013ec4478e"
+checksum = "f66ee92bc15280519ef199a274fe0cafff4245d31bc39aaa31c011ad56cb1f05"
 
 [[package]]
 name = "rfc6979"
diff --git a/ssh-cipher/Cargo.toml b/ssh-cipher/Cargo.toml
index 7d03987..b03547b 100644
--- a/ssh-cipher/Cargo.toml
+++ b/ssh-cipher/Cargo.toml
@@ -28,7 +28,7 @@ aes = { version = "0.9.0-rc.2", optional = true, default-features = false }
 aes-gcm = { version = "0.11.0-rc.2", optional = true, default-features = false, features = ["aes"] }
 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.5", optional = true, default-features = false, features = ["cipher", "legacy"] }
+chacha20 = { version = "0.10.0-rc.6", 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 }
 subtle = { version = "2", optional = true, default-features = false }
diff --git a/ssh-key/Cargo.toml b/ssh-key/Cargo.toml
index 3f6d457..7015ba3 100644
--- a/ssh-key/Cargo.toml
+++ b/ssh-key/Cargo.toml
@@ -43,7 +43,7 @@ sha1 = { version = "0.11.0-rc.3", optional = true, default-features = false, fea
 
 [dev-dependencies]
 hex-literal = "1"
-chacha20 = { version = "0.10.0-rc.5", features = ["rng"] }
+chacha20 = { version = "0.10.0-rc.6", features = ["rng"] }
 
 [features]
 default = ["ecdsa", "rand_core", "std"]