diff --git a/crates/types/Cargo.toml b/crates/types/Cargo.toml
index 0228926b..d445499d 100644
--- a/crates/types/Cargo.toml
+++ b/crates/types/Cargo.toml
@@ -9,7 +9,7 @@ publish.workspace = true
 
 [features]
 default = ["signer-local"]
-arbitrary = ["dep:arbitrary"]
+arbitrary = ["dep:arbitrary", "alloy-primitives/arbitrary"]
 signer-local = ["dep:malachitebft-signing-ed25519"]
 
 [dependencies]
@@ -21,7 +21,7 @@ alloy-rlp = { workspace = true }
 alloy-rpc-types-engine = { workspace = true, features = ["ssz"] }
 
 # others
-arbitrary = { workspace = true, optional = true }
+arbitrary = { workspace = true, optional = true, features = ["derive"] }
 arc-shared = { workspace = true }
 async-trait = { workspace = true }
 bytes = { workspace = true }