diff --git a/OutlookOkan/Models/CheckNewVersion.cs b/OutlookOkan/Models/CheckNewVersion.cs
index 0102011..d1a33ca 100644
--- a/OutlookOkan/Models/CheckNewVersion.cs
+++ b/OutlookOkan/Models/CheckNewVersion.cs
@@ -22,7 +22,7 @@ public bool IsCanDownloadNewVersion()
                     ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
 
                     client.Encoding = System.Text.Encoding.UTF8;
-                    var versionFile = client.DownloadString("https://github.com/t-miyake/OutlookOkan/blob/master/version");
+                    var versionFile = client.DownloadString("https://raw.githubusercontent.com/t-miyake/OutlookOkan/master/version");
                     if (string.IsNullOrEmpty(versionFile)) return false;
 
                     var fetchedVersion = int.Parse(versionFile.Replace(".", ""));