diff --git a/src/fontations/Cargo.toml b/src/fontations/Cargo.toml
index 2bf839899..a1daa91f9 100644
--- a/src/fontations/Cargo.toml
+++ b/src/fontations/Cargo.toml
@@ -14,7 +14,9 @@ crate-type = ["staticlib"]
 [profile.release]
 lto = true
 panic = "abort"
+codegen-units = 1
 
 [profile.debugoptimized]
 inherits = "release"
 debug = true
+codegen-units = 16