diff --git a/Cargo.toml b/Cargo.toml
index c4b45489c..8a5047beb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ rust-version = "1.63.0"
 
 [features]
 default = ["std"]
-std = ["bitcoin/std", "bitcoin/secp-recovery", "bech32/std"]
+std = ["bitcoin/std", "bitcoin/secp-recovery", "bech32/std", "serde?/std"]
 compiler = []
 trace = []
 
@@ -26,7 +26,7 @@ bech32 = { version = "0.11.0", default-features = false, features = ["alloc"] }
 bitcoin = { version = "0.32.6", default-features = false }
 hex = { package = "hex-conservative", default-features = false, features = ["alloc"], version = "1.0.0" }
 
-serde = { version = "1.0.103", optional = true }
+serde = { version = "1.0.103", default-features = false, features = ["alloc"], optional = true }
 
 [dev-dependencies]
 serde_test = "1.0.147"