diff --git a/Cargo.toml b/Cargo.toml
index cd4c62c..41607d6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ default = ["console_error_panic_hook"]
 
 [dependencies]
 cfg-if = "1.0.0"
-worker = "0.4.2"
+worker = "0.5.0"
 serde_json = "1.0"
 wasm-timer = "0.2.5"
 
@@ -32,3 +32,6 @@ opt-level = "s"
 lto = true
 strip = true
 codegen-units = 1
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(wasm_bindgen_unstable_test_coverage)'] }