diff --git a/Cargo.toml b/Cargo.toml
index 28d0e77..a357235 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,6 +6,10 @@ edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[profile.release]
+lto = true
+codegen-units = 1
+
 [dependencies]
 docopt = "1.1.0"
 serde = "1.0.91"