diff --git a/crates/backend/Cargo.toml b/crates/backend/Cargo.toml
index d6d0eba1..3980e770 100644
--- a/crates/backend/Cargo.toml
+++ b/crates/backend/Cargo.toml
@@ -6,7 +6,7 @@ license = "MIT"
 name = "napi-derive-backend"
 readme = "README.md"
 repository = "https://github.com/napi-rs/napi-rs"
-version = "1.0.4"
+version = "1.0.5"
 
 [features]
 strict = []
diff --git a/crates/macro/Cargo.toml b/crates/macro/Cargo.toml
index 270c1e5e..683e3ebc 100644
--- a/crates/macro/Cargo.toml
+++ b/crates/macro/Cargo.toml
@@ -7,7 +7,7 @@ license = "MIT"
 name = "napi-derive"
 readme = "README.md"
 repository = "https://github.com/napi-rs/napi-rs"
-version = "2.0.0-alpha.3"
+version = "2.0.0-alpha.4"
 
 [features]
 compat-mode = []
@@ -18,7 +18,7 @@ type-def = ["napi-derive-backend/type-def"]
 
 [dependencies]
 convert_case = "0.4"
-napi-derive-backend = {version = "1.0.4", path = "../backend"}
+napi-derive-backend = {version = "1.0.5", path = "../backend"}
 proc-macro2 = "1.0"
 quote = "1.0"
 syn = {version = "1.0", features = ["fold", "full", "extra-traits"]}
diff --git a/crates/napi/Cargo.toml b/crates/napi/Cargo.toml
index 2238c3d0..6debd5c0 100644
--- a/crates/napi/Cargo.toml
+++ b/crates/napi/Cargo.toml
@@ -7,7 +7,7 @@ license = "MIT"
 name = "napi"
 readme = "README.md"
 repository = "https://github.com/napi-rs/napi-rs"
-version = "2.0.0-alpha.2"
+version = "2.0.0-alpha.3"
 
 [features]
 async = ["tokio_rt"]
diff --git a/crates/napi/src/bindgen_runtime/js_values.rs b/crates/napi/src/bindgen_runtime/js_values.rs
index 65cd6ebc..e8919656 100644
--- a/crates/napi/src/bindgen_runtime/js_values.rs
+++ b/crates/napi/src/bindgen_runtime/js_values.rs
@@ -13,6 +13,7 @@ mod map;
 mod nil;
 mod number;
 mod object;
+#[cfg(all(feature = "tokio_rt", feature = "napi4"))]
 mod promise;
 #[cfg(feature = "serde-json")]
 mod serde;
@@ -29,6 +30,7 @@ pub use either::*;
 pub use function::*;
 pub use nil::*;
 pub use object::*;
+#[cfg(all(feature = "tokio_rt", feature = "napi4"))]
 pub use promise::*;
 pub use string::*;
 pub use symbol::*;
diff --git a/crates/napi/src/bindgen_runtime/js_values/object.rs b/crates/napi/src/bindgen_runtime/js_values/object.rs
index 3b33fcb4..ef0b4d94 100644
--- a/crates/napi/src/bindgen_runtime/js_values/object.rs
+++ b/crates/napi/src/bindgen_runtime/js_values/object.rs
@@ -4,6 +4,7 @@ use std::{ffi::CString, ptr};
 pub type Object = JsObject;
 
 impl Object {
+  #[cfg(feature = "serde-json")]
   pub(crate) fn new(env: sys::napi_env) -> Result<Self> {
     let mut ptr = ptr::null_mut();
     unsafe {