diff --git a/tools/generate-nightly-version.ps1 b/tools/generate-nightly-version.ps1
index a74924a2..d6b8ef7e 100644
--- a/tools/generate-nightly-version.ps1
+++ b/tools/generate-nightly-version.ps1
@@ -2,6 +2,6 @@ $toolsRoot = (Split-Path -parent $PSCommandPath)
 
 $mainVersion = & "$toolsRoot\get-main-version.ps1"
 $commitHash = (git rev-parse HEAD).Substring(0, 5)
-$date = [System.DateTime]::Now.ToString('yyyyMMdd')
-$nightlyVersion = "$mainVersion-$date.$commitHash"
+$date = [System.DateTime]::UtcNow.ToString('yyyyMMdd')
+$nightlyVersion = "$mainVersion-alpha.$date.$commitHash"
 Write-Output $nightlyVersion
\ No newline at end of file