diff --git a/Cargo.toml b/Cargo.toml
index d8575ce..31bb0bd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -144,6 +144,8 @@ anyhow = "1.0"
 
 [profile.release]
 debug = true
+lto = true
+codegen-units = 1
 
 [[test]]
 name="opa"