diff --git a/lib/nixos/home-manager/modules/mpv.nix b/lib/nixos/home-manager/modules/mpv.nix
index 8c80492b..163205cd 100644
--- a/lib/nixos/home-manager/modules/mpv.nix
+++ b/lib/nixos/home-manager/modules/mpv.nix
@@ -1,5 +1,11 @@
 {
   programs.mpv = {
     enable = true;
+
+    # https://github.com/mpv-player/mpv/blob/master/etc/input.conf
+    bindings = {
+      "DOWN" = "add volume -5";
+      "UP" = "add volume 5";
+    };
   };
 }