diff --git a/pkgs/liminix-tools/services/builder.sh b/pkgs/liminix-tools/services/builder.sh
index a0b6778..744a86e 100644
--- a/pkgs/liminix-tools/services/builder.sh
+++ b/pkgs/liminix-tools/services/builder.sh
@@ -11,7 +11,7 @@ test -n "$contents" && for d in $contents; do
     touch $out/${name}/contents.d/$d
 done
 
-for i in run notification-fd up down consumer-for producer-for pipeline-name ; do
+for i in timeout-up timeout-down run notification-fd up down consumer-for producer-for pipeline-name ; do
     test -n "$(printenv $i)" && (echo "$(printenv $i)" > $out/${name}/$i)
 done
 
diff --git a/pkgs/liminix-tools/services/default.nix b/pkgs/liminix-tools/services/default.nix
index 658aa10..881fea0 100644
--- a/pkgs/liminix-tools/services/default.nix
+++ b/pkgs/liminix-tools/services/default.nix
@@ -31,6 +31,8 @@ let
     , producer-for ? null
     , consumer-for ? null
     , pipeline-name ? null
+    , timeout-up ? 30000        # milliseconds
+    , timeout-down ? 0
     , dependencies ? []
     , contents ? []
     , buildInputs ? []
@@ -39,7 +41,7 @@ let
       # we use stdenvNoCC to avoid generating derivations with names
       # like foo.service-mips-linux-musl
       inherit name serviceType up down run notification-fd
-        producer-for consumer-for pipeline-name;
+        producer-for consumer-for pipeline-name timeout-up timeout-down;
       buildInputs = buildInputs ++ dependencies ++ contents;
       dependencies = builtins.map (d: d.name) dependencies;
       contents = builtins.map (d: d.name) contents;