diff --git a/Cargo.toml b/Cargo.toml
index 7a76f0b..e198bec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,5 +7,10 @@ edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[profile.release]
+opt-level = 3
+lto = "fat"
+codegen-units = 1
+
 [dependencies]
 chain = {package = "markov", version = "1.1.0"}
\ No newline at end of file