diff --git a/contrib/package/nix/deps/busy-mp3/default.nix b/contrib/package/nix/deps/busy-mp3/default.nix
new file mode 100644
index 00000000..72e89ee9
--- /dev/null
+++ b/contrib/package/nix/deps/busy-mp3/default.nix
@@ -0,0 +1,8 @@
+{ runCommand, sox, lame, pigz }: runCommand "busy-mp3"
+{
+  nativeBuildInputs = [ sox lame pigz ];
+}
+  ''
+    ${builtins.readFile ./../../../../../scripts/deps-docker/busy-mp3.sh}
+    mv /dev/shm/busy.mp3.gz $out
+  ''
diff --git a/contrib/package/nix/overlay.nix b/contrib/package/nix/overlay.nix
index b825492a..0a019de8 100644
--- a/contrib/package/nix/overlay.nix
+++ b/contrib/package/nix/overlay.nix
@@ -7,6 +7,7 @@ final: prev: {
   codemirror = final.callPackage ./deps/codemirror { };
   marked = final.callPackage ./deps/marked { };
   easy-mde = final.callPackage ./deps/easy-mde { };
+  busy-mp3 = final.callPackage ./deps/busy-mp3 { };
 
   python3 = prev.python3.override {
     packageOverrides = pyFinal: pyPrev: {