diff --git a/Cargo.toml b/Cargo.toml
index 74658ce..a3455d1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -58,6 +58,7 @@ opt-level = 2
 rpath = false
 debug-assertions = false
 panic = "abort"
+codegen-units = 1
 
 # Optimize build dependencies, because bindgen and proc macros / style
 # compilation take more to run than to build otherwise.