diff --git a/Recyclable.Collections/MemoryBucket.cs b/Recyclable.Collections/MemoryBucket.cs
index e2e49e4..54a228a 100644
--- a/Recyclable.Collections/MemoryBucket.cs
+++ b/Recyclable.Collections/MemoryBucket.cs
@@ -1,6 +1,6 @@
 namespace Recyclable.Collections
 {
-	internal class MemoryBucket<T>
+	internal sealed class MemoryBucket<T>
 	{
 		public MemoryBucket(T[] memory, MemoryBucket<T> nextBucket)
 		{
diff --git a/Recyclable.Collections/Pools/OneSizeArrayPool.cs b/Recyclable.Collections/Pools/OneSizeArrayPool.cs
index 11859c5..4434d63 100644
--- a/Recyclable.Collections/Pools/OneSizeArrayPool.cs
+++ b/Recyclable.Collections/Pools/OneSizeArrayPool.cs
@@ -2,7 +2,7 @@
 
 namespace Recyclable.Collections.Pools
 {
-    public class OneSizeArrayPool<T> : ArrayPool<T>
+	public sealed class OneSizeArrayPool<T>
 	{
 		private readonly int _blockSize;
 		private readonly int _minBlockCount;