diff --git a/pkgs/by-name/pk/pkarr/package.nix b/pkgs/by-name/pk/pkarr/package.nix
index a342709b910e..45b2256e15f2 100644
--- a/pkgs/by-name/pk/pkarr/package.nix
+++ b/pkgs/by-name/pk/pkarr/package.nix
@@ -5,16 +5,16 @@
 }:
 rustPlatform.buildRustPackage rec {
   pname = "pkarr";
-  version = "2.0.0";
+  version = "4.0.0";
 
   src = fetchFromGitHub {
     owner = "pubky";
     repo = "pkarr";
     rev = "v${version}";
-    hash = "sha256-zJe/hCdGVqs2TTwxnceGVXt0ZFRheSRYzjSRHytYXks=";
+    hash = "sha256-9sTF5h2+vWcz5ohAoo95vldTJGQyz/ICkVpIgaxilwA=";
   };
 
-  cargoHash = "sha256-y20vVO714WPcB2aYzo0LBuJhy224bsHA7O9Dj00ViWE=";
+  cargoHash = "sha256-26OlV/Xnl1+VFOaCWUjb8LxuJWrCsfY7QTlPZ7VMBCs=";
 
   meta = {
     description = "Public Key Addressable Resource Records (sovereign TLDs) ";