diff --git a/identity_core/Cargo.toml b/identity_core/Cargo.toml
index f8aa615b28..239383c2f6 100644
--- a/identity_core/Cargo.toml
+++ b/identity_core/Cargo.toml
@@ -21,8 +21,8 @@ time = { version = "0.3.23", default-features = false, features = ["std", "serde
 url = { version = "2.4", default-features = false, features = ["serde"] }
 zeroize = { version = "1.6", default-features = false }
 
-[target.'cfg(all(target_arch = "wasm32", not(target_os = "wasi"), not(feature = "custom_time")))'.dependencies]
-js-sys = { version = "0.3.55", default-features = false }
+[target.'cfg(all(target_arch = "wasm32", not(target_os = "wasi")))'.dependencies]
+js-sys = { version = "0.3.55", default-features = false, optional = true }
 
 [dev-dependencies]
 proptest = { version = "1.0.0" }
@@ -39,6 +39,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 workspace = true
 
 [features]
+default = ["dep:js-sys"]
 # Enables a macro to provide a custom time (Timestamp::now_utc) implementation, see src/custom_time.rs
 custom_time = []