diff --git a/pkgs/tools/text/mdbook-mermaid/default.nix b/pkgs/tools/text/mdbook-mermaid/default.nix
index b69dd103917d..2dafb13d508c 100644
--- a/pkgs/tools/text/mdbook-mermaid/default.nix
+++ b/pkgs/tools/text/mdbook-mermaid/default.nix
@@ -28,6 +28,6 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/badboy/mdbook-mermaid";
     changelog = "https://github.com/badboy/mdbook-mermaid/blob/v${version}/CHANGELOG.md";
     license = licenses.mpl20;
-    maintainers = with maintainers; [ xrelkd ];
+    maintainers = with maintainers; [ xrelkd matthiasbeyer ];
   };
 }