diff --git a/pkgs/development/tools/analysis/hotspot/default.nix b/pkgs/development/tools/analysis/hotspot/default.nix
index 5fede1aee5c5..449d5b6b5ed3 100644
--- a/pkgs/development/tools/analysis/hotspot/default.nix
+++ b/pkgs/development/tools/analysis/hotspot/default.nix
@@ -9,6 +9,7 @@
 , kio
 , kitemmodels
 , kitemviews
+, kparts
 , kwindowsystem
 , libelf
 , qtbase
@@ -21,13 +22,13 @@
 
 mkDerivation rec {
   pname = "hotspot";
-  version = "1.3.0";
+  version = "1.4.0";
 
   src = fetchFromGitHub {
     owner = "KDAB";
     repo = "hotspot";
     rev = "v${version}";
-    sha256 = "1f68bssh3p387hkavfjkqcf7qf7w5caznmjfjldicxphap4riqr5";
+    hash = "sha256-7GuIe8F3QqosW/XaN3KC1WeWcI7woUiEc9Nw0b+fSk0=";
     fetchSubmodules = true;
   };
 
@@ -36,12 +37,13 @@ mkDerivation rec {
     extra-cmake-modules
   ];
   buildInputs = [
-    elfutils
+    (elfutils.override { enableDebuginfod = true; }) # perfparser needs to find debuginfod.h
     kconfigwidgets
     ki18n
     kio
     kitemmodels
     kitemviews
+    kparts
     kwindowsystem
     libelf
     qtbase
@@ -60,11 +62,6 @@ mkDerivation rec {
     mkdir -p 3rdparty/{perfparser,PrefixTickLabels}/.git
   '';
 
-  cmakeFlags = [
-    "-DRUSTC_DEMANGLE_INCLUDE_DIR=${rustc-demangle}/include"
-    "-DRUSTC_DEMANGLE_LIBRARY=${rustc-demangle}/lib/librustc_demangle.so"
-  ];
-
   meta = {
     description = "A GUI for Linux perf";
     longDescription = ''