diff --git a/Cargo.toml b/Cargo.toml
index 6c8a1e1..3ed9ead 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,7 +32,7 @@ lexical-core = { version = "0.8.5", default-features = false, features = [
 reqwest = { version = "0.11", features = ["blocking", "json"], optional = true }
 tabled = { version = "0.15.0", optional = true }
 openssl = { version = "0.10", features = ["vendored"], optional = true }
-web-time = { version = "1.0.0" }
+web-time = { version = "1.0.0", optional = true }
 
 [target.wasm32-unknown-unknown.dependencies]
 js-sys = { version = "0.3" }
@@ -68,7 +68,7 @@ iai = "0.1"
 
 [features]
 default = ["std"]
-std = ["serde", "serde_derive"]
+std = ["serde", "serde_derive", "web-time"]
 asn1der = ["der"]
 python = ["std", "asn1der", "pyo3", "ut1"]
 ut1 = ["std", "reqwest", "tabled", "openssl"]