diff --git a/build/scripts/prepare-install-package.ps1 b/build/scripts/prepare-install-package.ps1
index 2218cfe91..738f9f802 100644
--- a/build/scripts/prepare-install-package.ps1
+++ b/build/scripts/prepare-install-package.ps1
@@ -1,3 +1,5 @@
+#!/usr/bin/env pwsh
+
 #
 #
 # Note: On Windows, this script *does not* set Linux permissions. The final changes are handled by the
diff --git a/build/scripts/set-smapi-version.ps1 b/build/scripts/set-smapi-version.ps1
old mode 100644
new mode 100755
index a89608657..6890d13d7
--- a/build/scripts/set-smapi-version.ps1
+++ b/build/scripts/set-smapi-version.ps1
@@ -1,3 +1,5 @@
+#!/usr/bin/env pwsh
+
 . "$PSScriptRoot\lib\in-place-regex.ps1"
 
 # get version number