diff --git a/src/Security/Authentication/test/CertificateTests.cs b/src/Security/Authentication/test/CertificateTests.cs
index e25bbafcd8f3b7dba349e881edcd742016fe21cc..911063d3a24e4d70d730cf97859a35e0e5a88f8b 100644
--- a/src/Security/Authentication/test/CertificateTests.cs
+++ b/src/Security/Authentication/test/CertificateTests.cs
@@ -330,7 +330,7 @@ namespace Microsoft.AspNetCore.Authentication.Certificate.Test
             Assert.Equal(HttpStatusCode.Forbidden, response.StatusCode);
         }
 
-        [Fact]
+    [Fact(Skip = "https://github.com/dotnet/aspnetcore/issues/39669")]
         public async Task VerifyValidClientCertWithTrustedChainAuthenticates()
         {
             using var host = await CreateHost(
@@ -347,7 +347,7 @@ namespace Microsoft.AspNetCore.Authentication.Certificate.Test
             Assert.Equal(HttpStatusCode.OK, response.StatusCode);
         }
 
-        [Fact]
+    [Fact(Skip = "https://github.com/dotnet/aspnetcore/issues/39669")]
         public async Task VerifyValidClientCertWithAdditionalCertificatesAuthenticates()
         {
             using var host = await CreateHost(