diff --git a/pkgs/top-level/build-for-release.nix b/pkgs/top-level/build-for-release.nix
index 551d95a6a137..354e224c534a 100644
--- a/pkgs/top-level/build-for-release.nix
+++ b/pkgs/top-level/build-for-release.nix
@@ -69,6 +69,7 @@ let {
     kcachegrind
     keen4
     kernel
+    klibc
     less
     libtool
     libxml2
@@ -106,6 +107,7 @@ let {
     sdf
     shadowutils
     spidermonkey
+    splashutils
     strace
     strategoxt
     strategoxtUtils