diff --git a/release.nix b/release.nix
index dc49b20cc..854650bb9 100644
--- a/release.nix
+++ b/release.nix
@@ -278,10 +278,10 @@ let
         { extraPackages =
             [ "perl-DBD-SQLite" "perl-devel" "sqlite" "sqlite-devel" "bzip2-devel" "emacs" "libcurl-devel" "openssl-devel" "xz-devel" ]
             ++ extraPackages; };
-      memSize = 8192;
+      #memSize = 8192;
       meta.schedulingPriority = 50;
       postRPMInstall = "cd /tmp/rpmout/BUILD/nix-* && make installcheck";
-      enableParallelBuilding = true;
+      #enableParallelBuilding = true;
     };
 
 
@@ -300,7 +300,7 @@ let
         { extraPackages =
             [ "libdbd-sqlite3-perl" "libsqlite3-dev" "libbz2-dev" "libwww-curl-perl" "libcurl-dev" "libcurl3-nss" "libssl-dev" "liblzma-dev" ]
             ++ extraPackages; };
-      memSize = 8192;
+      #memSize = 8192;
       meta.schedulingPriority = 50;
       postInstall = "make installcheck";
       configureFlags = "--sysconfdir=/etc";
@@ -309,7 +309,7 @@ let
         ++ extraDebPackages;
       debMaintainer = "Eelco Dolstra <eelco.dolstra@logicblox.com>";
       doInstallCheck = true;
-      enableParallelBuilding = true;
+      #enableParallelBuilding = true;
     };