diff --git a/bin/builder_web_app.ml b/bin/builder_web_app.ml
index 3fe65fa..22c4151 100644
--- a/bin/builder_web_app.ml
+++ b/bin/builder_web_app.ml
@@ -113,7 +113,7 @@ let run_batch_viz ~cachedir ~datadir ~configdir =
         m "Error while starting batch-viz.sh: %a"
           Rresult.R.pp_msg err)
 
-let setup_app level influx port host datadir cachedir configdir run_batch_viz_flag =
+let setup_app level influx port host datadir cachedir configdir run_batch_viz_flag expired_jobs =
   let dbpath = Printf.sprintf "%s/builder.sqlite3" datadir in
   let datadir = Fpath.v datadir in
   let cachedir =
@@ -159,7 +159,7 @@ let setup_app level influx port host datadir cachedir configdir run_batch_viz_fl
     let error_handler = Dream.error_template Builder_web.error_template in
     Dream.initialize_log ?level ();
     let dream_routes = Builder_web.(
-        routes ~datadir ~cachedir ~configdir
+        routes ~datadir ~cachedir ~configdir ~expired_jobs
         |> to_dream_routes
       )
     in
@@ -241,11 +241,15 @@ let run_batch_viz =
              log is written to CACHE_DIR/batch-viz.log" in
   Arg.(value & flag & info [ "run-batch-viz" ] ~doc)
 
+let expired_jobs =
+  let doc = "Amount of days after which a job is considered to be inactive if \
+             no successful build has been achieved (use 0 for infinite)" in
+  Arg.(value & opt int 30 & info [ "expired-jobs" ] ~doc)
 
 let () =
   let term =
     Term.(const setup_app $ Logs_cli.level () $ influx $ port $ host $ datadir $
-          cachedir $ configdir $ run_batch_viz)
+          cachedir $ configdir $ run_batch_viz $ expired_jobs)
   in
   let info = Cmd.info "Builder web" ~doc:"Builder web" ~man:[] in
   Cmd.v info term
diff --git a/lib/builder_web.ml b/lib/builder_web.ml
index a09d889..c70b4a3 100644
--- a/lib/builder_web.ml
+++ b/lib/builder_web.ml
@@ -258,7 +258,7 @@ module Viz_aux = struct
 end
 
 
-let routes ~datadir ~cachedir ~configdir =
+let routes ~datadir ~cachedir ~configdir ~expired_jobs =
   let builds ~filter_builds_later_than req =
     Dream.sql req Model.jobs_with_section_synopsis
     |> if_error "Error getting jobs"
@@ -610,17 +610,20 @@ let routes ~datadir ~cachedir ~configdir =
 
   let w f req = or_error_response (f req) in
 
-  let thirty_days_ago =
-    let thirty = Ptime.Span.v (30, 0L) in
-    let now = Ptime_clock.now () in
-    Ptime.Span.sub (Ptime.to_span now) thirty |> Ptime.of_span |>
-    Option.fold
-      ~none:Ptime.epoch
-      ~some:Fun.id
+  let n_days_ago =
+    if expired_jobs = 0 then
+      Ptime.epoch
+    else
+      let n = Ptime.Span.v (expired_jobs, 0L) in
+      let now = Ptime_clock.now () in
+      Ptime.Span.sub (Ptime.to_span now) n |> Ptime.of_span |>
+      Option.fold
+        ~none:Ptime.epoch
+        ~some:Fun.id
   in
 
   [
-    `Get, "/", (w (builds ~filter_builds_later_than:thirty_days_ago));
+    `Get, "/", (w (builds ~filter_builds_later_than:n_days_ago));
     `Get, "/job/:job", (w job);
     `Get, "/job/:job/failed", (w job_with_failed);
     `Get, "/job/:job/build/latest/**", (w redirect_latest);
diff --git a/test/router.ml b/test/router.ml
index 33e45c8..b3eaccd 100644
--- a/test/router.ml
+++ b/test/router.ml
@@ -59,7 +59,7 @@ let router =
    * in the handlers which are never called here. The path /nonexistant is
    * assumed to not exist. *)
   let nodir = Fpath.v "/nonexistant" in
-  Builder_web.routes ~datadir:nodir ~cachedir:nodir ~configdir:nodir
+  Builder_web.routes ~datadir:nodir ~cachedir:nodir ~configdir:nodir ~expired_jobs:0
   |> List.map (fun (meth, route, _handler) ->
       meth, route, Param_verification.verify (find_parameters route))
   |> Builder_web.to_dream_routes