diff --git a/Cargo.lock b/Cargo.lock
index 746941d..f80f797 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -41,9 +41,9 @@ dependencies = [
 
 [[package]]
 name = "argon2"
-version = "0.6.0-rc.3"
+version = "0.6.0-rc.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53fc8992356faa4da0422d552f1dc7d7fda26927165069fd0af2d565f0b0fc6f"
+checksum = "a26e88a084142953a0415c47ddf4081eddf9a6d310012bbe92e9827d03e447f0"
 dependencies = [
  "base64ct",
  "blake2",
@@ -475,13 +475,11 @@ dependencies = [
 
 [[package]]
 name = "password-hash"
-version = "0.6.0-rc.3"
+version = "0.6.0-rc.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11ceb29fb5976f752babcc02842a530515b714919233f0912845c742dffb6246"
+checksum = "383d290055c99f2dd7dece082088d89494dff6d79277fbac4a7da21c1bf2ab6b"
 dependencies = [
- "base64ct",
- "rand_core",
- "subtle",
+ "phc",
 ]
 
 [[package]]
@@ -502,6 +500,16 @@ dependencies = [
  "base64ct",
 ]
 
+[[package]]
+name = "phc"
+version = "0.6.0-rc.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c61f960577aaac5c259bc0866d685ba315c0ed30793c602d7287f54980913863"
+dependencies = [
+ "base64ct",
+ "subtle",
+]
+
 [[package]]
 name = "poly1305"
 version = "0.9.0-rc.3"
diff --git a/ssh-key/Cargo.toml b/ssh-key/Cargo.toml
index 5f9e31a..3f6d457 100644
--- a/ssh-key/Cargo.toml
+++ b/ssh-key/Cargo.toml
@@ -26,7 +26,7 @@ subtle = { version = "2", default-features = false }
 zeroize = { version = "1", default-features = false }
 
 # optional dependencies
-argon2 = { version = "0.6.0-rc.3", optional = true, default-features = false, features = ["alloc"] }
+argon2 = { version = "0.6.0-rc.5", optional = true, default-features = false, features = ["alloc"] }
 bcrypt-pbkdf = { version = "0.11.0-rc.2", optional = true, default-features = false, features = ["alloc"] }
 dsa = { version = "0.7.0-rc.7", optional = true, default-features = false, features = ["hazmat"] }
 ed25519-dalek = { version = "=3.0.0-pre.3", optional = true, default-features = false }