diff --git a/tests/NewRelic.Core.Tests/NewRelic.Cache/SimpleCacheTests.cs b/tests/NewRelic.Core.Tests/NewRelic.Cache/SimpleCacheTests.cs
index 2701424094..d111c1b8a0 100644
--- a/tests/NewRelic.Core.Tests/NewRelic.Cache/SimpleCacheTests.cs
+++ b/tests/NewRelic.Core.Tests/NewRelic.Cache/SimpleCacheTests.cs
@@ -268,7 +268,7 @@ public void CacheMaintenanceThreadMaintainsCache()
             cache.GetOrAdd("key1", () => "value1");
             cache.GetOrAdd("key2", () => "value2");
 
-            Thread.Sleep(1000);
+            Thread.Sleep(2500); // unnecessarily long, but should eliminate test flickers
 
             EvaluateCacheMetrics(cache, 0, 2, 2, 0);
         }