diff --git a/crates/starknet-types-core/Cargo.toml b/crates/starknet-types-core/Cargo.toml
index 1b61b80..498538e 100644
--- a/crates/starknet-types-core/Cargo.toml
+++ b/crates/starknet-types-core/Cargo.toml
@@ -26,7 +26,7 @@ num-integer = {version = "0.1.45",  default-features = false}
 default = ["std", "serde", "curve"]
 curve = []
 hash = ["dep:lambdaworks-crypto"]
-std = []
+std = ["alloc"]
 alloc = ["serde?/alloc"]
 arbitrary = ["std", "dep:arbitrary"]