diff --git a/test/aprsme_web/controllers/api/v1/callsign_controller_test.exs b/test/aprsme_web/controllers/api/v1/callsign_controller_test.exs
index 02e6dca..feb2826 100644
--- a/test/aprsme_web/controllers/api/v1/callsign_controller_test.exs
+++ b/test/aprsme_web/controllers/api/v1/callsign_controller_test.exs
@@ -5,6 +5,17 @@ defmodule AprsmeWeb.Api.V1.CallsignControllerTest do
 
   import Aprsme.PacketsFixtures
 
+  setup do
+    # Reset the Hammer rate-limiter ETS table so we don't trigger 429s from
+    # accumulated hits across the full test suite.
+    case :ets.info(Aprsme.RateLimiter) do
+      :undefined -> :ok
+      _ -> :ets.delete_all_objects(Aprsme.RateLimiter)
+    end
+
+    :ok
+  end
+
   describe "GET /api/v1/callsign/:callsign" do
     test "returns 400 for an invalid callsign format", %{conn: conn} do
       conn = get(conn, ~p"/api/v1/callsign/invalid@callsign")
diff --git a/test/aprsme_web/controllers/api/v1/weather_controller_test.exs b/test/aprsme_web/controllers/api/v1/weather_controller_test.exs
index 0161e2f..3607f09 100644
--- a/test/aprsme_web/controllers/api/v1/weather_controller_test.exs
+++ b/test/aprsme_web/controllers/api/v1/weather_controller_test.exs
@@ -3,6 +3,17 @@ defmodule AprsmeWeb.Api.V1.WeatherControllerTest do
 
   import Aprsme.PacketsFixtures
 
+  setup do
+    # Reset the Hammer rate-limiter ETS table so we don't trigger 429s from
+    # accumulated hits across the full test suite.
+    case :ets.info(Aprsme.RateLimiter) do
+      :undefined -> :ok
+      _ -> :ets.delete_all_objects(Aprsme.RateLimiter)
+    end
+
+    :ok
+  end
+
   describe "GET /api/v1/weather/nearby" do
     setup do
       # Create a weather station packet