diff --git a/csharp/test/Apache.Arrow.Tests/CDataInterfacePythonTests.cs b/csharp/test/Apache.Arrow.Tests/CDataInterfacePythonTests.cs
index 82f8a11ea3f39..0ef8eba26129e 100644
--- a/csharp/test/Apache.Arrow.Tests/CDataInterfacePythonTests.cs
+++ b/csharp/test/Apache.Arrow.Tests/CDataInterfacePythonTests.cs
@@ -796,7 +796,7 @@ public unsafe void RoundTripTestBatch()
         public unsafe void RoundTripTestSlicedBatch()
         {
             // TODO: Enable these once this the version of pyarrow referenced during testing supports them
-            HashSet<ArrowTypeId> unsupported = new HashSet<ArrowTypeId> { ArrowTypeId.ListView, ArrowTypeId.BinaryView, ArrowTypeId.StringView };
+            HashSet<ArrowTypeId> unsupported = new HashSet<ArrowTypeId> { ArrowTypeId.ListView, ArrowTypeId.BinaryView, ArrowTypeId.StringView, ArrowTypeId.Decimal32, ArrowTypeId.Decimal64 };
             RecordBatch batch1 = TestData.CreateSampleRecordBatch(4, excludedTypes: unsupported);
             RecordBatch batch1slice = batch1.Slice(1, 2);
             RecordBatch batch2 = batch1slice.Clone();