diff --git a/Cargo.toml b/Cargo.toml
index f4dda6b..648cfab 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -39,3 +39,6 @@ socks = { version = "0.3.4", optional = true}
 
 [workspace]
 members = ["fuzz", "integration_test"]
+
+[lints.rust]
+unexpected_cfgs = { level = "deny", check-cfg = ['cfg(jsonrpc_fuzz)'] }