diff --git a/pkgs/applications/version-management/mercurial/default.nix b/pkgs/applications/version-management/mercurial/default.nix
index c5dd09eb197..258bc5d71dd 100644
--- a/pkgs/applications/version-management/mercurial/default.nix
+++ b/pkgs/applications/version-management/mercurial/default.nix
@@ -21,11 +21,11 @@ let
 
   self = python3Packages.buildPythonApplication rec {
     pname = "mercurial${lib.optionalString fullBuild "-full"}";
-    version = "6.4.5";
+    version = "6.5";
 
     src = fetchurl {
       url = "https://mercurial-scm.org/release/mercurial-${version}.tar.gz";
-      sha256 = "sha256-sLSwC4smOci+OHOUeW8EJb6zOTFN9+cpN/jd0qQbG4o=";
+      sha256 = "sha256-pWA9DTlev2f+XSeruzvTf8wBhx7POUx5NnLSweaL5+c=";
     };
 
     format = "other";
@@ -35,7 +35,7 @@ let
     cargoDeps = if rustSupport then rustPlatform.fetchCargoTarball {
       inherit src;
       name = "mercurial-${version}";
-      sha256 = "sha256-shB2MRGATTg4l6pJ9FVYfBtnrX/eEHRvPhc8GZTA9ns=";
+      sha256 = "sha256-umjOU3OmTdPmLS4IWncqmKxSa6J4KXwTlGhylFt6TQo=";
       sourceRoot = "mercurial-${version}/rust";
     } else null;
     cargoRoot = if rustSupport then "rust" else null;