diff --git a/pkgs/servers/squid/default.nix b/pkgs/servers/squid/default.nix
index 19bfa152c023..41073e8cc839 100644
--- a/pkgs/servers/squid/default.nix
+++ b/pkgs/servers/squid/default.nix
@@ -16,6 +16,8 @@ stdenv.mkDerivation rec {
     perl openldap db cyrus_sasl expat libxml2 openssl
   ] ++ lib.optionals stdenv.isLinux [ libcap pam systemd ];
 
+  enableParallelBuilding = true;
+
   configureFlags = [
     "--enable-ipv6"
     "--disable-strict-error-checking"