diff --git a/pkgs/tools/misc/topgrade/default.nix b/pkgs/tools/misc/topgrade/default.nix
index 014fdad13dc..6dc47e31725 100644
--- a/pkgs/tools/misc/topgrade/default.nix
+++ b/pkgs/tools/misc/topgrade/default.nix
@@ -2,16 +2,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "topgrade";
-  version = "6.5.2";
+  version = "6.6.0";
 
   src = fetchFromGitHub {
     owner = "r-darwish";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-7tgYVxZ4E6qi/HLgfC0ZreHuXgtd3JMg4ENQL50YWr4=";
+    sha256 = "sha256-YMg5HWDvBsYJZCxYrQuQqU4xLY8DORKYkK319pryA5I=";
   };
 
-  cargoSha256 = "sha256-xxJfNFegvtHJno7o54Rqai9DvvffrkxTFci673Yq/NI=";
+  cargoSha256 = "sha256-G6ToQzPxuKpe1YQ4nLDJLjb3qx8D3VpuigXfdf7RHCQ=";
 
   buildInputs = lib.optional stdenv.isDarwin Foundation;