diff --git a/timestamp-id3.php b/timestamp-id3.php
index 359bd2e..f6e041b 100644
--- a/timestamp-id3.php
+++ b/timestamp-id3.php
@@ -137,6 +137,11 @@ foreach ( $lines as $line ) {
     if ( preg_match( '/^#EXTINF:\s*(\d+(?:\.\d+)?),/', $line, $matches ) ) {
         $duration = floatval( $matches[1] );
     }
+    if ( preg_match( '/^#EXT-X-VERSION:(.*)/', $line, $matches ) ) {
+        if ( intval( $matches[1] ) < 4 ) {
+            $line = "#EXT-X-VERSION:7";
+        }
+    }
     if (preg_match( '/^#/', $line ) ) {
         $lines_out[] = $line;
         continue;