diff --git a/pkgs/applications/kde/kcachegrind.nix b/pkgs/applications/kde/kcachegrind.nix
index 308ed35dc4e..72c22c21ec5 100644
--- a/pkgs/applications/kde/kcachegrind.nix
+++ b/pkgs/applications/kde/kcachegrind.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation, lib,
   extra-cmake-modules, kdoctools,
-  karchive, ki18n, kio, perl, python, php, qttools
+  karchive, ki18n, kio, perl, python3, php, qttools
   , kdbusaddons
 }:
 
@@ -12,5 +12,5 @@ mkDerivation {
     maintainers = with lib.maintainers; [ orivej ];
   };
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
-  buildInputs = [ karchive ki18n kio perl python php qttools kdbusaddons ];
+  buildInputs = [ karchive ki18n kio perl python3 php qttools kdbusaddons ];
 }