diff --git a/Cargo.lock b/Cargo.lock
index aed2be6..29b54e5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -255,8 +255,9 @@ dependencies = [
 
 [[package]]
 name = "curve25519-dalek"
-version = "5.0.0-pre.5"
-source = "git+https://github.com/dalek-cryptography/curve25519-dalek#ea475248aec83dc319765974350d4731f2660731"
+version = "5.0.0-pre.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "335f1947f241137a14106b6f5acc5918a5ede29c9d71d3f2cb1678d5075d9fc3"
 dependencies = [
  "cfg-if",
  "cpufeatures",
@@ -341,18 +342,18 @@ dependencies = [
 
 [[package]]
 name = "ed25519"
-version = "3.0.0-rc.2"
+version = "3.0.0-rc.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "594435fe09e345ee388e4e8422072ff7dfeca8729389fbd997b3f5504c44cd47"
+checksum = "c6e914c7c52decb085cea910552e24c63ac019e3ab8bf001ff736da9a9d9d890"
 dependencies = [
  "signature",
 ]
 
 [[package]]
 name = "ed25519-dalek"
-version = "3.0.0-pre.5"
+version = "3.0.0-pre.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "416904184c8542e5e4f6c052fdfb377164ab462706ce3a496641aa9ea6a1e172"
+checksum = "053618a4c3d3bc24f188aa660ae75a46eeab74ef07fb415c61431e5e7cd4749b"
 dependencies = [
  "curve25519-dalek",
  "ed25519",
diff --git a/Cargo.toml b/Cargo.toml
index 3110642..e08f27c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,5 +16,3 @@ ssh-cipher = { path = "./ssh-cipher" }
 ssh-derive = { path = "./ssh-derive" }
 ssh-encoding = { path = "./ssh-encoding" }
 ssh-key = { path = "./ssh-key" }
-
-curve25519-dalek = { git = "https://github.com/dalek-cryptography/curve25519-dalek" }
diff --git a/ssh-key/Cargo.toml b/ssh-key/Cargo.toml
index a302134..0751070 100644
--- a/ssh-key/Cargo.toml
+++ b/ssh-key/Cargo.toml
@@ -39,7 +39,7 @@ zeroize = { version = "1", default-features = false }
 argon2 = { version = "0.6.0-rc.7", optional = true, default-features = false, features = ["alloc"] }
 bcrypt-pbkdf = { version = "0.11.0-rc.6", optional = true, default-features = false, features = ["alloc"] }
 dsa = { version = "0.7.0-rc.12", optional = true, default-features = false, features = ["hazmat"] }
-ed25519-dalek = { version = "=3.0.0-pre.5", optional = true, default-features = false }
+ed25519-dalek = { version = "=3.0.0-pre.6", optional = true, default-features = false }
 hex = { version = "0.4", optional = true, default-features = false, features = ["alloc"] }
 hmac = { version = "0.13.0-rc.5", optional = true }
 p256 = { version = "0.14.0-rc.7", optional = true, default-features = false, features = ["ecdsa"] }