diff --git a/todo.txt b/todo.txt
index e41b4bbfc..eef900cea 100644
--- a/todo.txt
+++ b/todo.txt
@@ -19,6 +19,8 @@ TODO, which will get actually done
 
 - SDL: SD card permission dialog does nothing on Android 10.
 
+- SDL: Add SDL2_mixer library and replace ogg and flac libraries.
+
 - XSDL: use pixel size instead of video mode size, Android multiwindow support.
 
 - XSDL: proper window resizing, with xrandr resizing XSDL screen buffer.