diff --git a/doc/conf.py b/doc/conf.py
index 58181f9e1c..7fc24822eb 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -85,6 +85,7 @@ def setup(app):
     "sphinx.ext.autosummary",
     "sphinx.ext.mathjax",
     "sphinx.ext.viewcode",
+    "sphinx.ext.imgconverter",
     "sphinx.ext.intersphinx",
     "sphinx.ext.napoleon",
     "sphinxarg.ext",