diff --git a/tests/PSCustomObject.Tests.ps1 b/tests/PSCustomObject.Tests.ps1
index 946d571..9795cb4 100644
--- a/tests/PSCustomObject.Tests.ps1
+++ b/tests/PSCustomObject.Tests.ps1
@@ -1,4 +1,6 @@
-[Diagnostics.CodeAnalysis.SuppressMessageAttribute(
+#Requires -Modules @{ ModuleName = 'Pester'; ModuleVersion = '6.0.0'; MaximumVersion = '6.*' }
+
+[Diagnostics.CodeAnalysis.SuppressMessageAttribute(
     'PSUseDeclaredVarsMoreThanAssignments', '',
     Justification = 'Pester grouping syntax: known issue.'
 )]