diff --git a/pkgs/applications/video/alass/default.nix b/pkgs/applications/video/alass/default.nix
new file mode 100644
index 00000000000..c57a224ee0a
--- /dev/null
+++ b/pkgs/applications/video/alass/default.nix
@@ -0,0 +1,33 @@
+{ lib
+, fetchFromGitHub
+, rustPlatform
+, makeWrapper
+, ffmpeg
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "alass";
+  version = "2.0.0";
+
+  src = fetchFromGitHub {
+    owner = "kaegi";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-q1IV9TtmznpR7RO75iN0p16nmTja5ADWqFj58EOPWvU=";
+  };
+
+  cargoSha256 = "sha256-6CVa/ypz37bm/3R0Gi65ovu4SIwWcgVde3Z2W1R16mk=";
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  postInstall = ''
+    wrapProgram "$out/bin/alass-cli" --prefix PATH : "${lib.makeBinPath [ ffmpeg ]}"
+  '';
+
+  meta = with lib; {
+    description = "Automatic Language-Agnostic Subtitle Synchronization";
+    homepage = "https://github.com/kaegi/alass";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ erictapen ];
+  };
+}
diff --git a/pkgs/applications/video/sub-batch/default.nix b/pkgs/applications/video/sub-batch/default.nix
index 070bcc90685..9cda6eb0a2b 100644
--- a/pkgs/applications/video/sub-batch/default.nix
+++ b/pkgs/applications/video/sub-batch/default.nix
@@ -1,21 +1,29 @@
-{ lib, stdenv
+{ stdenv
+, lib
 , fetchFromGitHub
 , rustPlatform
+, makeWrapper
+, alass
 }:
 
 rustPlatform.buildRustPackage rec {
   pname = "sub-batch";
-  version = "0.3.0";
+  version = "0.4.0";
 
   src = fetchFromGitHub {
     owner = "kl";
     repo = pname;
-    # Upstream doesn't tag releases.
-    rev = "631bd6e2d931f8a8e12798f4b6460739a14bcfff";
-    sha256 = "sha256-424e40v2LBxlmgDKxvsT/iuUn/IKWPKMwih0cSQ5sFE=";
+    rev = "v${version}";
+    sha256 = "sha256-5fDnSmnnVB1RGrNrnmp40OGFF+OAhppnhOjVgnYxXr0=";
   };
 
-  cargoSha256 = "sha256-l+BTF9PGb8bG8QHhNCoBsrsVX8nlRjPlaea1ESFfMW0=";
+  cargoSha256 = "sha256-cj1htJcUPCeYbP0t15UcMv4WQAG7tUROb97v4rUeMvU=";
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  postInstall = ''
+    wrapProgram "$out/bin/sub-batch" --prefix PATH : "${lib.makeBinPath [ alass ]}"
+  '';
 
   meta = with lib; {
     description = "Match and rename subtitle files to video files and perform other batch operations on subtitle files";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 400d4e3a8f1..1f9600f9e1f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -13250,6 +13250,8 @@ in
 
   agg = callPackage ../development/libraries/agg { };
 
+  alass = callPackage ../applications/video/alass { };
+
   allegro = allegro4;
   allegro4 = callPackage ../development/libraries/allegro {};
   allegro5 = callPackage ../development/libraries/allegro/5.nix {};