diff --git a/Cargo.lock b/Cargo.lock
index 6bf3f3e..b535f93 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -394,9 +394,9 @@ dependencies = [
 
 [[package]]
 name = "ed25519"
-version = "2.2.2"
+version = "2.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60f6d271ca33075c88028be6f04d502853d63a5ece419d269c15315d4fc1cf1d"
+checksum = "115531babc129696a58c64a4fef0a8bf9e9698629fb97e9e40767d235cfbcd53"
 dependencies = [
  "pkcs8",
  "serde",
@@ -436,6 +436,7 @@ dependencies = [
  "rand_core 0.6.4",
  "serde",
  "sha2 0.10.8",
+ "subtle",
  "zeroize",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 9513ccd..d32c3cb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ features = ["nightly"]
 # so only allow patch changes inside known compatible range
 curve25519-dalek = { version = ">= 4.0, < 4.2", default-features = false, features = ["alloc", "digest", "zeroize", "precomputed-tables"] }
 der = { version = "0.7.1", optional = true }
-ed25519 = { version = "2.2.0", default-features = false }
+ed25519 = { version = "2.2.3", default-features = false }
 hashbrown = "0.14.0"
 hex = { version = "0.4.3", default-features = false, features = ["alloc"] }
 pkcs8 = { version = "0.10.1", optional = true, features = ["alloc", "pem"] }