diff --git a/Cargo.toml b/Cargo.toml
index 419ea0d..094eb89 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,6 +17,8 @@ async-std = { version = "1.8", features = ["attributes"] }
 serde = { version = "1.0", features = ["derive"] }
 deser-hjson = "0.1"
 x509-parser = "0.9.2"
+
+[profile.release]
 codegen-units = 1
 opt-level = 'z'
 lto = true