diff --git a/pkgs/development/python-modules/sphinxcontrib_plantuml/default.nix b/pkgs/development/python-modules/sphinxcontrib_plantuml/default.nix
index d89ecb6218c2..579b2f173eee 100644
--- a/pkgs/development/python-modules/sphinxcontrib_plantuml/default.nix
+++ b/pkgs/development/python-modules/sphinxcontrib_plantuml/default.nix
@@ -7,11 +7,11 @@
 
 buildPythonPackage rec {
   pname = "sphinxcontrib-plantuml";
-  version = "0.17.1";
+  version = "0.18";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1amvczdin078ia1ax2379lklxr0bwjsrin96174dvssxpzjl04cc";
+    sha256 = "08555dndvp12g261wag3qklybdbfnjcmagh4gpl79k2kz5bqrk5c";
   };
 
   # No tests included.