diff --git a/Cargo.toml b/Cargo.toml
index 77ffbdf..b3efc07 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,6 +9,12 @@ edition = "2018"
 [lib]
 crate-type = ["cdylib"]
 
+[profile.release]
+opt-level = 3
+lto = "fat"
+codegen-units = 1
+panic = "abort"
+
 [dependencies]
 sha2 = "0.9"
 malloc-array = "1.4"
diff --git a/Makefile b/Makefile
index 0d1a2de..bb9cb3e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 INSTALL:= /usr/local/lib
 
 khash:
-	cargo build --release
+	RUSTFLAGS="-C target-cpu=native" cargo build --release
 	strip ./target/release/libkhash.so
 
 test: