diff --git a/docs/conf.py b/docs/conf.py
index 8eaa58dd5..aba358a71 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -132,6 +132,8 @@ def setup(app: Sphinx):
     "h5py._hl.files.File": "h5py.File",
     "h5py._hl.dataset.Dataset": "h5py.Dataset",
     "anndata._core.anndata.AnnData": "anndata.AnnData",
+    "anndata._io.specs.registry.read_callback": "anndata.experimental.read_callback",
+    "anndata._io.specs.registry.write_callback": "anndata.experimental.write_callback",
 }
 
 # -- Social cards ---------------------------------------------------------