diff --git a/pkgs/applications/audio/carla/default.nix b/pkgs/applications/audio/carla/default.nix
index 4ee3aab2a79d..fdb3ea1e7149 100644
--- a/pkgs/applications/audio/carla/default.nix
+++ b/pkgs/applications/audio/carla/default.nix
@@ -24,15 +24,15 @@
 assert withQt -> qtbase != null;
 assert withQt -> wrapQtAppsHook != null;
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "carla";
-  version = "2.5.4";
+  version = "2.5.5";
 
   src = fetchFromGitHub {
     owner = "falkTX";
-    repo = pname;
-    rev = "v${version}";
-    hash = "sha256-St0+avF9/UzQj8T1eZq5HSmxnaK9+BXSuufyX0NJYbU=";
+    repo = finalAttrs.pname;
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-kXQ0dv4KrwvfxdP73zimof9XKpAz5E6hQrFOjLG4hKU=";
   };
 
   nativeBuildInputs = [
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional withGtk2 gtk2
     ++ lib.optional withGtk3 gtk3;
 
-  propagatedBuildInputs = pythonPath;
+  propagatedBuildInputs = finalAttrs.pythonPath;
 
   enableParallelBuilding = true;
 
@@ -100,4 +100,4 @@ stdenv.mkDerivation rec {
     maintainers = [ maintainers.minijackson ];
     platforms = platforms.linux;
   };
-}
+})