diff --git a/src/PluginCache.as b/src/PluginCache.as
index 921dfc9..8213f52 100644
--- a/src/PluginCache.as
+++ b/src/PluginCache.as
@@ -67,7 +67,7 @@ namespace PluginCache
 		}
 		js["installed"] = jsInstalled;
 
-		Json::ToFile(pathInstalled, js);
+		Json::ToFile(pathInstalled, js, true);
 
 		if (Setting_VerboseLog) {
 			trace("Saved PluginCache.json");
diff --git a/src/UpdateCheck.as b/src/UpdateCheck.as
index 1ffb937..94684a2 100644
--- a/src/UpdateCheck.as
+++ b/src/UpdateCheck.as
@@ -83,6 +83,11 @@ void CheckForUpdatesAsync()
 			continue;
 		}
 
+		auto plugin = Meta::GetPluginFromSiteID(siteId);
+		if (plugin !is null and plugin.Type != Meta::PluginType::Zip) {
+			continue;
+		}
+
 		warn("New plugin update available for " + info.m_name + ": " + info.m_version.ToString() + " -> " + siteVersion);
 
 		UI::ShowNotification(