diff --git a/docs/conf.py b/docs/conf.py
index 56edc83..da48866 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -30,7 +30,15 @@
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = ['sphinx_rtd_theme']
+extensions = [
+    "sphinx.ext.duration",
+    "sphinx.ext.doctest",
+    "sphinx.ext.autodoc",
+    "sphinx.ext.autosummary",
+    "sphinx.ext.intersphinx",
+]
+
+intersphinx_disabled_domains = ["std"]
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']