diff --git a/common/Cargo.toml b/common/Cargo.toml
index ffd0a0a..ab600e8 100644
--- a/common/Cargo.toml
+++ b/common/Cargo.toml
@@ -12,7 +12,7 @@ rand = { version = "0.8.5", optional = true }
 salty = { git = "https://github.com/oxidecomputer/salty", branch = "v0.2.0-zeroize", optional = true }
 
 [dev-dependencies]
-ed25519 = { version = "1.4.1" }
+ed25519 = { version = "2.0.0" }
 ed25519-dalek = { version = "1.0.1", features = ["u64_backend"]}
 salty = { git = "https://github.com/oxidecomputer/salty", branch = "v0.2.0-zeroize" }
 rand = "0.8.5"
diff --git a/session/Cargo.toml b/session/Cargo.toml
index 8529f28..d3a9061 100644
--- a/session/Cargo.toml
+++ b/session/Cargo.toml
@@ -17,7 +17,7 @@ serde = { version = "1.0.136", default-features = false, features = ["derive"]
 # The ring API requires a KDF and is a bit more awkward to use.
 #
 rand_core = { version = "0.6.3", features = ["getrandom"] }
-ed25519 = { version = "1.4.1" }
+ed25519 = { version = "2.0.0" }
 ed25519-dalek = { version = "1.0.1", features = ["u64_backend"]}
 x25519-dalek = { version = "2.0.0-pre.1" }
 sha3 = "0.10.1"