1 files changed, 2 insertions, 2 deletions
diff --git a/crypto/test/src/x509/test/TestCertificateGen.cs b/crypto/test/src/x509/test/TestCertificateGen.cs
index 448bb8794..019c2a460 100644
--- a/crypto/test/src/x509/test/TestCertificateGen.cs
+++ b/crypto/test/src/x509/test/TestCertificateGen.cs
@@ -263,8 +263,8 @@ namespace Org.BouncyCastle.X509.Tests
             certGen.SetSerialNumber(BigInteger.One);
 
             certGen.SetIssuerDN(new X509Name(ord, attrs));
-            certGen.SetNotBefore(DateTime.Today.Subtract(new TimeSpan(1, 0, 0, 0)));
-            certGen.SetNotAfter(DateTime.Today.AddDays(1));
+            certGen.SetNotBefore(DateTime.UtcNow.AddDays(-1));
+            certGen.SetNotAfter(DateTime.UtcNow.AddDays(1));
             certGen.SetSubjectDN(new X509Name(ord, attrs));
             certGen.SetPublicKey(ecPub);
             certGen.SetSignatureAlgorithm("SHA1WITHECDSA");