diff --git a/pkgs/by-name/ma/mackerel-agent/package.nix b/pkgs/by-name/ma/mackerel-agent/package.nix
index fb38a764e41a..111b2b956b0c 100644
--- a/pkgs/by-name/ma/mackerel-agent/package.nix
+++ b/pkgs/by-name/ma/mackerel-agent/package.nix
@@ -10,20 +10,20 @@
 
 buildGoModule rec {
   pname = "mackerel-agent";
-  version = "0.85.0";
+  version = "0.85.1";
 
   src = fetchFromGitHub {
     owner = "mackerelio";
     repo = "mackerel-agent";
     rev = "v${version}";
-    sha256 = "sha256-wTL+zxa0uaRT8cP2P+iYW6qC8RS5g8wSpvsa01iSUXA=";
+    sha256 = "sha256-ngBBpvDk5HsMNoZy45mlEBn3dgG8j1b98tShdR6QmQQ=";
   };
 
   nativeBuildInputs = [ makeWrapper ];
   nativeCheckInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ net-tools ];
   buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ iproute2 ];
 
-  vendorHash = "sha256-Q3HsfLA6xqzwXVfRc0bOb15kW2tdwj14DvJEZoRy0/4=";
+  vendorHash = "sha256-Ubk/ms/3FwH1ZqZ5uTy0MubXhrKBoeaC85Y1KKH5cIw=";
 
   subPackages = [ "." ];