diff --git a/pkgs/development/misc/avr/libc/default.nix b/pkgs/development/misc/avr/libc/default.nix
index ac9da31fcc0f..9b3ac75d1104 100644
--- a/pkgs/development/misc/avr/libc/default.nix
+++ b/pkgs/development/misc/avr/libc/default.nix
@@ -15,6 +15,8 @@ stdenv.mkDerivation rec {
   stripDebugList = [ "bin" ];
   dontPatchELF = true;
 
+  enableParallelBuilding = true;
+
   passthru = {
     incdir = "/avr/include";
   };