diff --git a/pkgs/tools/text/mdbook-graphviz/default.nix b/pkgs/tools/text/mdbook-graphviz/default.nix
index 060fd5871d1b..43171c92dc96 100644
--- a/pkgs/tools/text/mdbook-graphviz/default.nix
+++ b/pkgs/tools/text/mdbook-graphviz/default.nix
@@ -23,6 +23,6 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/dylanowen/mdbook-graphviz";
     changelog = "https://github.com/dylanowen/mdbook-graphviz/releases/tag/v${version}";
     license = [ licenses.mpl20 ];
-    maintainers = with maintainers; [ lovesegfault ];
+    maintainers = with maintainers; [ lovesegfault matthiasbeyer ];
   };
 }