diff --git a/tests/PSCredential.Tests.ps1 b/tests/PSCredential.Tests.ps1
index 117a34d..ff0c57a 100644
--- a/tests/PSCredential.Tests.ps1
+++ b/tests/PSCredential.Tests.ps1
@@ -1,4 +1,6 @@
-[Diagnostics.CodeAnalysis.SuppressMessageAttribute(
+#Requires -Modules @{ ModuleName = 'Pester'; ModuleVersion = '6.0.0'; MaximumVersion = '6.*' }
+
+[Diagnostics.CodeAnalysis.SuppressMessageAttribute(
     'PSAvoidUsingConvertToSecureStringWithPlainText', '',
     Justification = 'Tests only; not for production code'
 )]