diff --git a/AutoTx/Resources/Update-AutoTxService.ps1 b/AutoTx/Resources/Update-AutoTxService.ps1
index d574649532e3b18f305852c185291e3428d06a37..2c11a24829d8faa072dd2db4a6d55dd9639d75bd 100644
--- a/AutoTx/Resources/Update-AutoTxService.ps1
+++ b/AutoTx/Resources/Update-AutoTxService.ps1
@@ -1,6 +1,9 @@
 # Script to be run by the task scheduler for automatic updates of the AutoTx
 # service binaries and / or configuration file.
 
+# Testing has been done on PowerShell 5.1 only, so we set this as a requirement:
+#requires -version 5.1
+
 
 [CmdletBinding()]
 Param(