diff --git a/Cargo.toml b/Cargo.toml
index 81aa34a..1f37573 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,4 +18,5 @@ url = "2.1.0"
 
 [profile.release]
 lto = true
+codegen-units = 1
 opt-level = "s"