diff --git a/pkgs/by-name/fl/flamelens/package.nix b/pkgs/by-name/fl/flamelens/package.nix
index aea1bd4d963b..a090637037aa 100644
--- a/pkgs/by-name/fl/flamelens/package.nix
+++ b/pkgs/by-name/fl/flamelens/package.nix
@@ -6,16 +6,16 @@
 
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "flamelens";
-  version = "0.3.1";
+  version = "0.4.0";
 
   src = fetchFromGitHub {
     owner = "YS-L";
     repo = "flamelens";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-cvsBeV9pdgr8V+82Fw/XZS1Ljq/7ff4JYMHnNxqNvOM=";
+    hash = "sha256-b7lRMyeX/aL1ziSaLBUxChrwXeKNhcCShjGY6ANYqhY=";
   };
 
-  cargoHash = "sha256-FIIt8RwPaPrVG3D9FoMjR4L81NzUrKZsAeW2AJkBG1o=";
+  cargoHash = "sha256-QcEN83Cd92i0Ll+8uWSLREKk5i0STwhAKTCx48BiI6A=";
 
   meta = {
     description = "Interactive flamegraph viewer in the terminal";