diff --git a/pkgs/development/python-modules/checkdmarc/default.nix b/pkgs/development/python-modules/checkdmarc/default.nix
index 4a17afb2f1b3..7a1e122b737d 100644
--- a/pkgs/development/python-modules/checkdmarc/default.nix
+++ b/pkgs/development/python-modules/checkdmarc/default.nix
@@ -16,7 +16,7 @@
 
 buildPythonPackage rec {
   pname = "checkdmarc";
-  version = "4.8.4";
+  version = "5.5.0";
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
@@ -25,7 +25,7 @@ buildPythonPackage rec {
     owner = "domainaware";
     repo = "checkdmarc";
     rev = "refs/tags/${version}";
-    hash = "sha256-NNB5dYQzzdNapjP4mtpCW08BzfZ+FFRESUtpxCOzrdk=";
+    hash = "sha256-skQqLWBEmfyiW2DsRRbj3Lfj52QZca0zKenFC7LltjM=";
   };
 
   nativeBuildInputs = [ hatchling ];