diff --git a/X10D.Tests/src/Collections/ArrayTests.cs b/X10D.Tests/src/Collections/ArrayTests.cs
index cc053ff..d5d745f 100644
--- a/X10D.Tests/src/Collections/ArrayTests.cs
+++ b/X10D.Tests/src/Collections/ArrayTests.cs
@@ -25,6 +25,7 @@ public class ArrayTests
         Assert.ThrowsException<ArgumentNullException>(array!.AsReadOnly);
     }
 
+    [CLSCompliant(false)]
     [TestMethod]
     [DataRow]
     [DataRow(1)]
diff --git a/X10D.Tests/src/Collections/ListTests.cs b/X10D.Tests/src/Collections/ListTests.cs
index 3be91f8..f62adc4 100644
--- a/X10D.Tests/src/Collections/ListTests.cs
+++ b/X10D.Tests/src/Collections/ListTests.cs
@@ -6,6 +6,7 @@ namespace X10D.Tests.Collections;
 [TestClass]
 public class ListTests
 {
+    [CLSCompliant(false)]
     [TestMethod]
     [DataRow(1)]
     [DataRow(1, 2, 3)]
@@ -25,6 +26,7 @@ public class ListTests
         CollectionAssert.AreEqual(all42, list);
     }
 
+    [CLSCompliant(false)]
     [TestMethod]
     [DataRow(1)]
     [DataRow(1, 2, 3)]