diff --git a/doc/source/conf.py b/doc/source/conf.py
index c4837a7..c83d59e 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -159,3 +159,5 @@
     autodoc_pydantic_model_erdantic_figure = True
 except ImportError:
     autodoc_pydantic_model_erdantic_figure = False
+
+graphviz_output_format = "svg"