diff --git a/curve25519-dalek/Cargo.toml b/curve25519-dalek/Cargo.toml
index ac740eba..2c30a6e0 100644
--- a/curve25519-dalek/Cargo.toml
+++ b/curve25519-dalek/Cargo.toml
@@ -30,6 +30,7 @@ rustdoc-args = [
 features = ["serde", "rand_core", "digest", "legacy_compatibility", "group-bits"]
 
 [dev-dependencies]
+hex = "0.4"
 sha2 = { version = "0.10", default-features = false }
 bincode = "1"
 rand = "0.8"
@@ -47,7 +48,6 @@ required-features = ["alloc", "rand_core"]
 cfg-if = "1"
 ff = { version = "0.13", default-features = false, optional = true }
 group = { version = "0.13", default-features = false, optional = true }
-hex = "0.4.2"
 rand_core = { version = "0.6.4", default-features = false, optional = true }
 digest = { version = "0.10", default-features = false, optional = true }
 subtle = { version = "2.3.0", default-features = false }
diff --git a/ed25519-dalek/Cargo.toml b/ed25519-dalek/Cargo.toml
index cdc4d0a5..44d944ae 100644
--- a/ed25519-dalek/Cargo.toml
+++ b/ed25519-dalek/Cargo.toml
@@ -40,10 +40,10 @@ zeroize = { version = "1.5", default-features = false, optional = true }
 
 [dev-dependencies]
 curve25519-dalek = { version = "4", path = "../curve25519-dalek", default-features = false, features = ["digest", "rand_core"] }
+hex = "0.4"
 x25519-dalek = { version = "2", path = "../x25519-dalek", default-features = false, features = ["static_secrets"] }
 blake2 = "0.10"
 sha3 = "0.10"
-hex = "0.4"
 bincode = "1.0"
 serde_json = "1.0"
 hex-literal = "0.4"