diff --git a/doc/conf.py b/doc/conf.py
index 59c7b549..b0b8acca 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -48,6 +48,7 @@ def get_version():
 # ones.
 extensions = [
     "sphinx.ext.autodoc",
+    "sphinx.ext.imgconverter",
     "sphinx.ext.intersphinx",
     "sphinx.ext.mathjax",
     "sphinx.ext.napoleon",