diff --git a/lib/microwaveprop/workers/hrrr_fetch_worker.ex b/lib/microwaveprop/workers/hrrr_fetch_worker.ex
index 92a0f35e..587f3a94 100644
--- a/lib/microwaveprop/workers/hrrr_fetch_worker.ex
+++ b/lib/microwaveprop/workers/hrrr_fetch_worker.ex
@@ -1,6 +1,6 @@
 defmodule Microwaveprop.Workers.HrrrFetchWorker do
   @moduledoc false
-  use Oban.Worker, queue: :hrrr, max_attempts: 20
+  use Oban.Worker, queue: :hrrr, max_attempts: 20, unique: [period: 3600]
 
   alias Microwaveprop.Weather
   alias Microwaveprop.Weather.HrrrClient
diff --git a/lib/microwaveprop/workers/terrain_profile_worker.ex b/lib/microwaveprop/workers/terrain_profile_worker.ex
index 299d6ec5..69660801 100644
--- a/lib/microwaveprop/workers/terrain_profile_worker.ex
+++ b/lib/microwaveprop/workers/terrain_profile_worker.ex
@@ -1,6 +1,6 @@
 defmodule Microwaveprop.Workers.TerrainProfileWorker do
   @moduledoc false
-  use Oban.Worker, queue: :terrain, max_attempts: 20
+  use Oban.Worker, queue: :terrain, max_attempts: 20, unique: [period: 3600]
 
   alias Microwaveprop.Radio
   alias Microwaveprop.Terrain
diff --git a/lib/microwaveprop/workers/weather_fetch_worker.ex b/lib/microwaveprop/workers/weather_fetch_worker.ex
index 1a1886ba..38f74e0e 100644
--- a/lib/microwaveprop/workers/weather_fetch_worker.ex
+++ b/lib/microwaveprop/workers/weather_fetch_worker.ex
@@ -1,6 +1,6 @@
 defmodule Microwaveprop.Workers.WeatherFetchWorker do
   @moduledoc false
-  use Oban.Worker, queue: :weather, max_attempts: 20
+  use Oban.Worker, queue: :weather, max_attempts: 20, unique: [period: 3600]
 
   alias Microwaveprop.Repo
   alias Microwaveprop.Weather