diff --git a/pkgs/development/python-modules/plantuml-markdown/default.nix b/pkgs/development/python-modules/plantuml-markdown/default.nix
index 9fd818691610..c24cd66e2fac 100644
--- a/pkgs/development/python-modules/plantuml-markdown/default.nix
+++ b/pkgs/development/python-modules/plantuml-markdown/default.nix
@@ -14,7 +14,7 @@
 
 buildPythonPackage rec {
   pname = "plantuml-markdown";
-  version = "3.10.3";
+  version = "3.10.4";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -23,7 +23,7 @@ buildPythonPackage rec {
     owner = "mikitex70";
     repo = pname;
     rev = "refs/tags/${version}";
-    hash = "sha256-9G+llIojgNyxupvKLfJC4igjtNK1YjbEMxcape9xqmk=";
+    hash = "sha256-5K8NSxMCdAsOtV0egY8gMbHnHifvYNRHzafR0LAcm+Q=";
   };
 
   propagatedBuildInputs = [