diff --git a/Cargo.lock b/Cargo.lock
index 01d08b26..e5b43cb4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -268,9 +268,9 @@ checksum = "2874a2af47a2325c2001a6e6fad9b16a53b802102b528163885171cf92b15976"
 
 [[package]]
 name = "mcf"
-version = "0.6.0-rc.0"
+version = "0.6.0-rc.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97fe7b16e9a78dd25fb4a09d26f04fe0f8bd5a8a7574c27cbec331f9cf802e79"
+checksum = "5cccf883a4e4c6a0d0f912967c2e36bdf0b4406a903075200eb18b42728884a1"
 dependencies = [
  "base64ct",
 ]
diff --git a/scrypt/Cargo.toml b/scrypt/Cargo.toml
index 91123fcf..a6c7f847 100644
--- a/scrypt/Cargo.toml
+++ b/scrypt/Cargo.toml
@@ -20,7 +20,7 @@ sha2 = { version = "0.11.0-rc.3", default-features = false }
 rayon = { version = "1.11", optional = true }
 
 # optional dependencies
-mcf = { version = "0.6.0-rc.0", optional = true }
+mcf = { version = "0.6.0-rc.1", optional = true }
 password-hash = { version = "0.6.0-rc.6", optional = true, default-features = false }
 subtle = { version = "2", optional = true, default-features = false }
 
diff --git a/sha-crypt/Cargo.toml b/sha-crypt/Cargo.toml
index af92dc96..267c907c 100644
--- a/sha-crypt/Cargo.toml
+++ b/sha-crypt/Cargo.toml
@@ -21,7 +21,7 @@ sha2 = { version = "0.11.0-rc.3", default-features = false }
 base64ct = { version = "1.8", default-features = false, features = ["alloc"] }
 
 # optional dependencies
-mcf = { version = "0.6.0-rc.0", optional = true, default-features = false, features = ["alloc", "base64"] }
+mcf = { version = "0.6.0-rc.1", optional = true, default-features = false, features = ["alloc", "base64"] }
 password-hash = { version = "0.6.0-rc.6", optional = true, default-features = false }
 subtle = { version = "2", optional = true, default-features = false }
 
diff --git a/yescrypt/Cargo.toml b/yescrypt/Cargo.toml
index 9b581ec4..03352b83 100644
--- a/yescrypt/Cargo.toml
+++ b/yescrypt/Cargo.toml
@@ -21,7 +21,7 @@ sha2 = { version = "0.11.0-rc.3", default-features = false }
 subtle = { version = "2", default-features = false }
 
 # optional dependencies
-mcf = { version = "0.6.0-rc.0", optional = true, default-features = false, features = ["alloc", "base64"] }
+mcf = { version = "0.6.0-rc.1", optional = true, default-features = false, features = ["alloc", "base64"] }
 password-hash = { version = "0.6.0-rc.6", optional = true, default-features = false }
 
 [dev-dependencies]