diff --git a/gstlal-inspiral/share/O3/inspiral.yml b/gstlal-inspiral/share/O3/inspiral.yml
index 38f87529c8b61450f8b4edf55536a8a1f5086ea1..e8359503aa262bb9ed9b35f6b18f513ec8c92f22 100644
--- a/gstlal-inspiral/share/O3/inspiral.yml
+++ b/gstlal-inspiral/share/O3/inspiral.yml
@@ -176,9 +176,15 @@ plots:
     aggregate: max
     value:
 
-  # FIXME: add 'time since last' plot
+  # time since last plot
+  - title: Time Since Last Heartbeat
+    type: Bar
+    measurement: ram_history
+    column: data
+    aggregate: max
+    value:
+
   # FIXME: add time since trigger plot
-  # FIXME: add 'latest by job' plots
 
 nagios:
   lookback: 600
@@ -187,6 +193,11 @@ nagios:
   aggregate: max
   num_jobs: 328
 
+measurements:
+  ram_history:
+    num_jobs: 328
+    default: 1e4
+
 database:
   backend: hdf5
   rootdir: /home/gstlalcbc/replay/last_2_wks_o2/trigs.hyper