diff --git a/repos/ports/run/noux_tool_chain_auto.run b/repos/ports/run/noux_tool_chain_auto.run
index afe9008ad..b172f8533 100644
--- a/repos/ports/run/noux_tool_chain_auto.run
+++ b/repos/ports/run/noux_tool_chain_auto.run
@@ -85,7 +85,7 @@ if {[have_spec x86]} {
#
# Build Noux packages only once
#
-set noux_pkgs "bash coreutils vim grep sed findutils make which $binutils $gcc"
+set noux_pkgs "bash coreutils vim grep sed findutils make which $binutils $gcc tclsh"
foreach pkg $noux_pkgs {
lappend_if [expr ![file exists bin/$pkg]] build_components noux-pkg/$pkg }
@@ -109,6 +109,7 @@ puts $bash_profile_fd {
cp /bin/make /usr/bin/
cp /bin/echo /usr/bin/
cp /bin/mkdir /usr/bin/
+cp /bin/tclsh /usr/bin/
echo 'creating build directory...'
mkdir -p "/home/build"
cp -r /genode/depot /home/build
@@ -233,7 +234,12 @@ append config {