diff --git a/Cargo.toml b/Cargo.toml
index 1fba687f..99db0843 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,7 +25,7 @@ once_cell = "1.20"
 javy = { path = "crates/javy", version = "3.1.0-alpha.1" }
 tempfile = "3.13.0"
 uuid = { version = "1.10", features = ["v4"] }
-serde = "1.0"
+serde = { version = "1.0", default-features = false }
 serde_json = "1.0"
 
 [profile.release]
diff --git a/crates/javy/Cargo.toml b/crates/javy/Cargo.toml
index 6021a46b..7a2deda5 100644
--- a/crates/javy/Cargo.toml
+++ b/crates/javy/Cargo.toml
@@ -14,7 +14,7 @@ anyhow = { workspace = true }
 rquickjs = { version = "=0.6.1", features = ["array-buffer", "bindgen"] }
 rquickjs-core = "=0.6.1"
 rquickjs-sys = "=0.6.1"
-serde = { workspace = true, features = ["derive"] }
+serde = { workspace = true, default-features = true, features = ["derive"] }
 serde_json = { workspace = true, optional = true }
 serde-transcode = { version = "1.1", optional = true }
 rmp-serde = { version = "^1.3", optional = true }