diff --git a/Cargo.toml b/Cargo.toml
index cc4e955..a739a97 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,3 +27,4 @@ mime = "^0.3"
 [profile.release]
 strip = true
 lto = true
+codegen-units = 1