diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f151a92aa1c0..4edc4ce2bcf9 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -33838,6 +33838,7 @@ with pkgs;
 
   reaper = callPackage ../applications/audio/reaper {
     jackLibrary = libjack2; # Another option is "pipewire.jack".
+    ffmpeg = ffmpeg_4-headless;
   };
 
   recapp = callPackage ../applications/video/recapp { };