diff --git a/manifests/TreasureData/TDAgent/3.8.0.yaml b/manifests/TreasureData/TDAgent/3.8.0.yaml
index 51390bd5d..336e5e8ad 100644
--- a/manifests/TreasureData/TDAgent/3.8.0.yaml
+++ b/manifests/TreasureData/TDAgent/3.8.0.yaml
@@ -10,7 +10,7 @@ Description: A data collector for Treasure Data.
 Homepage: https://www.fluentd.org
 Installers:
   - Arch: x64
-    Url:  http://packages.treasuredata.com/3/windows/td-agent-3.8.0-0-x64.msi
+    Url: https://packages.treasuredata.com/3/windows/td-agent-3.8.0-0-x64.msi
     Sha256: B08D65BB9563A4BA5167663619E8F38FB0DE92F3FE6C73DAD2BB5B3F75C58D8D
     InstallerType: msi
     Switches: