diff --git a/pkgs/tools/package-management/lix/common.nix b/pkgs/tools/package-management/lix/common.nix
index a544707b4f35..fe77830d56f1 100644
--- a/pkgs/tools/package-management/lix/common.nix
+++ b/pkgs/tools/package-management/lix/common.nix
@@ -182,8 +182,11 @@ let
         ''}
       '';
 
+    mesonBuildType = "release";
     mesonFlags =
       [
+        # LTO optimization
+        (lib.mesonBool "b_lto" (!stdenv.isDarwin))
         (lib.mesonEnable "gc" true)
         (lib.mesonBool "enable-tests" true)
         (lib.mesonBool "enable-docs" enableDocumentation)