diff --git a/manifests/m/ManifoldSoftware/Manifold-Release-9/9.0.174/ManifoldSoftware.Manifold-Release-9.yaml b/manifests/m/ManifoldSoftware/Manifold-Release-9/9.0.174/ManifoldSoftware.Manifold-Release-9.yaml
index 28fc3a3af..64c844847 100644
--- a/manifests/m/ManifoldSoftware/Manifold-Release-9/9.0.174/ManifoldSoftware.Manifold-Release-9.yaml
+++ b/manifests/m/ManifoldSoftware/Manifold-Release-9/9.0.174/ManifoldSoftware.Manifold-Release-9.yaml
@@ -15,7 +15,7 @@ Tags:
 PackageUrl: http://manifold.net/
 Installers:
 - Architecture: x64
-  InstallerUrl: http://www.manifoldgis.com/updates/manifold-9.0.174-x64.exe
+  InstallerUrl: https://www.manifoldgis.com/updates/manifold-9.0.174-x64.exe
   InstallerSha256: fd13bb0b60f6af48281c7d9063e890e4b92c796824aba7e45fc7806192947a12
   InstallerType: exe
   InstallerSwitches: