diff --git a/pkgs/development/libraries/ffmpegthumbnailer/default.nix b/pkgs/development/libraries/ffmpegthumbnailer/default.nix
index 812da34061b..9bfee290871 100644
--- a/pkgs/development/libraries/ffmpegthumbnailer/default.nix
+++ b/pkgs/development/libraries/ffmpegthumbnailer/default.nix
@@ -1,19 +1,19 @@
-{ fetchFromGitHub, lib, stdenv, ffmpeg_4, cmake, libpng, pkg-config, libjpeg
+{ fetchFromGitHub, lib, stdenv, ffmpeg, cmake, libpng, pkg-config, libjpeg
 }:
 
 stdenv.mkDerivation rec {
   pname = "ffmpegthumbnailer";
-  version = "2.2.2";
+  version = "unstable-2021-09-02";
 
   src = fetchFromGitHub {
     owner = "dirkvdb";
     repo = "ffmpegthumbnailer";
-    rev = version;
-    sha256 = "1bakbr714j7yxdal1f5iq0gcl4cxggbbgj227ihdh5kvygqlwich";
+    rev = "d92e191dd793b12cee0a0f685f5a8d8252988399";
+    sha256 = "1ysfq3g74b8ivivrdpfi4vm23d3cyc3rfla5i6y8q9aycis9xv6q";
   };
 
   nativeBuildInputs = [ cmake pkg-config ];
-  buildInputs = [ ffmpeg_4 libpng libjpeg ];
+  buildInputs = [ ffmpeg libpng libjpeg ];
   cmakeFlags = [ "-DENABLE_THUMBNAILER=ON" ];
 
   meta = with lib;  {