diff --git a/doc/conf.py b/doc/conf.py
index f04ae1efb..9bec971ed 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -19,7 +19,7 @@
 # Add any Sphinx extension module names here, as strings. They can be extensions coming
 # with Sphinx (named 'sphinx.ext.*') or your custom ones.
 extensions = [
-    "ixmp.util.sphinx_linkcode_github",
+    # First party
     "sphinx.ext.autodoc",
     "sphinx.ext.autosummary",
     "sphinx.ext.coverage",
@@ -29,6 +29,9 @@
     "sphinx.ext.mathjax",
     "sphinx.ext.napoleon",
     "sphinx.ext.todo",
+    # Others
+    "ixmp.util.sphinx_linkcode_github",
+    "genno.compat.sphinx.rewrite_refs",
     "sphinxcontrib.bibtex",
 ]
 
@@ -77,6 +80,14 @@
 # The theme to use for HTML and HTML Help pages.
 html_theme = "sphinx_rtd_theme"
 
+# -- Options for genno.compat.sphinx.rewrite_refs --------------------------------------
+
+reference_aliases = {
+    r"(genno\.|)Quantity": "genno.core.attrseries.AttrSeries",
+    "AnyQuantity": ":data:`genno.core.quantity.AnyQuantity`",
+}
+
+
 # -- Options for sphinx.ext.extlinks ---------------------------------------------------
 
 extlinks = {
diff --git a/pyproject.toml b/pyproject.toml
index 3ae146586..06816f320 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,6 +50,7 @@ documentation = "https://docs.messageix.org/ixmp"
 [project.optional-dependencies]
 docs = [
   "ixmp[tests]",
+  "genno >= 1.26",  # For sphinx extensions; see doc/conf.py
   "GitPython",
   "numpydoc",
   "sphinx >= 3.0",