diff --git a/powershell/Install-Firefox.ps1 b/powershell/Install-Firefox.ps1
index 50659d8..d21ab64 100644
--- a/powershell/Install-Firefox.ps1
+++ b/powershell/Install-Firefox.ps1
@@ -97,6 +97,7 @@ function Install-FirefoxEsr {
         $Arguments = @(
             "install",
             "--id", $PackageId,
+            "--source", "winget",
             "--silent",
             "--accept-source-agreements",
             "--accept-package-agreements"
diff --git a/powershell/libres-softwares-install.ps1 b/powershell/libres-softwares-install.ps1
index 8013da7..7724be0 100644
--- a/powershell/libres-softwares-install.ps1
+++ b/powershell/libres-softwares-install.ps1
@@ -93,6 +93,7 @@ function Install-FirefoxEsr {
         $Arguments = @(
             "install",
             "--id", $PackageId,
+            "--source", "winget",
             "--silent",
             "--accept-source-agreements",
             "--accept-package-agreements"