diff --git a/MultimediaViewer.php b/MultimediaViewer.php
index e42147682..9af5c0466 100644
--- a/MultimediaViewer.php
+++ b/MultimediaViewer.php
@@ -1063,7 +1063,7 @@ $wgResourceModules += array(
 $wgHooks['EventLoggingRegisterSchemas'][] = function( array &$schemas ) {
 	$schemas += array(
 		'MediaViewer' => 10606177,
-		'MultimediaViewerNetworkPerformance' => 10596581,
+		'MultimediaViewerNetworkPerformance' => 10774577,
 		'MultimediaViewerDuration' => 10427980,
 		'MultimediaViewerAttribution' => 9758179,
 		'MultimediaViewerDimensions' => 10014238,
diff --git a/resources/mmv/logging/mmv.logging.PerformanceLogger.js b/resources/mmv/logging/mmv.logging.PerformanceLogger.js
index 2ac6e1b5c..df3fedd39 100644
--- a/resources/mmv/logging/mmv.logging.PerformanceLogger.js
+++ b/resources/mmv/logging/mmv.logging.PerformanceLogger.js
@@ -185,7 +185,8 @@
 			contentLength,
 			xcache,
 			xvarnish,
-			varnishXCache;
+			varnishXCache,
+			lastModified;
 
 		if ( !request ) {
 			return;
@@ -223,6 +224,11 @@
 		}
 
 		stats.timestamp = new Date( request.getResponseHeader( 'Date' ) ).getTime() / 1000;
+
+		lastModified = request.getResponseHeader( 'Last-Modified' );
+		if ( lastModified ) {
+			stats.lastModified = new Date( lastModified ).getTime() / 1000;
+		}
 	};
 
 	/**