diff --git a/src/test/java/blackbox/AllocatorBasedPoolTest.java b/src/test/java/blackbox/AllocatorBasedPoolTest.java
index 25a976fd..fc473474 100644
--- a/src/test/java/blackbox/AllocatorBasedPoolTest.java
+++ b/src/test/java/blackbox/AllocatorBasedPoolTest.java
@@ -1681,13 +1681,14 @@ void mustNotHoldOnToDeallocatedObjectsWhenLeakDetectionIsEnabled()
     // Clear the allocator lists to remove the last references
     allocator.clearLists();
 
-    // GC to force the object through finalization life cycle
-    System.gc();
-    System.gc();
-    System.gc();
+    int iterationCount = 0;
+    do {
+      // GC to force the object through finalization life cycle
+      System.gc();
+      assertThat(iterationCount++).isLessThan(1000);
 
-    // Now our weakReference must have been cleared
-    assertNull(weakReference.get());
+      // Now our weakReference must eventually have been cleared
+    } while (weakReference.get() != null);
   }
 
   @Test
diff --git a/src/test/java/blackbox/DefaultPoolTest.java b/src/test/java/blackbox/DefaultPoolTest.java
index 55a061a9..146726f6 100644
--- a/src/test/java/blackbox/DefaultPoolTest.java
+++ b/src/test/java/blackbox/DefaultPoolTest.java
@@ -25,10 +25,4 @@ class DefaultPoolTest extends ThreadBasedPoolTest {
   protected PoolBuilder<GenericPoolable> createInitialPoolBuilder(AlloKit.CountingAllocator allocator) {
     return Pool.from(allocator);
   }
-
-  @Override
-  void claimWhenInterruptedMustNotThrowIfObjectIsAvailableViaCache(Taps taps) throws Exception {
-    noBackgroundExpirationChecking(); // Prevent background expiration checking from claiming cached object.
-    super.claimWhenInterruptedMustNotThrowIfObjectIsAvailableViaCache(taps);
-  }
 }
diff --git a/src/test/java/blackbox/ThreadBasedPoolTest.java b/src/test/java/blackbox/ThreadBasedPoolTest.java
index 1420e77d..8a7745f7 100644
--- a/src/test/java/blackbox/ThreadBasedPoolTest.java
+++ b/src/test/java/blackbox/ThreadBasedPoolTest.java
@@ -702,4 +702,22 @@ void newBgAllocatedObjectsMustBeClaimedAheadOfExistingLiveObjects(Taps taps) thr
       d.release();
     }
   }
+
+  @Override
+  void claimWhenInterruptedMustNotThrowIfObjectIsAvailableViaCache(Taps taps) throws Exception {
+    noBackgroundExpirationChecking(); // Prevent background expiration checking from claiming cached object.
+    super.claimWhenInterruptedMustNotThrowIfObjectIsAvailableViaCache(taps);
+  }
+
+  @Override
+  void mustNotHoldOnToDeallocatedObjectsWhenLeakDetectionIsEnabled() throws Exception {
+    noBackgroundExpirationChecking();
+    super.mustNotHoldOnToDeallocatedObjectsWhenLeakDetectionIsEnabled();
+  }
+
+  @Override
+  void tryClaimMustReturnIfPoolIsNotEmpty(Taps taps) throws Exception {
+    noBackgroundExpirationChecking();
+    super.tryClaimMustReturnIfPoolIsNotEmpty(taps);
+  }
 }