diff --git a/docs/conf.py b/docs/conf.py
index fb6fbdb04..b0d271f62 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -335,10 +335,10 @@
 
 # Example configuration for intersphinx: refer to the Python standard library.
 intersphinx_mapping = {
-    "python": ("https://docs.python.org/", None),
-    "numpy": ("http://docs.scipy.org/doc/numpy", None),
-    "scipy": ("http://docs.scipy.org/doc/scipy/reference", None),
-    "matplotlib": ("http://matplotlib.sourceforge.net", None),
+    "python": ("https://docs.python.org/3/", None),
+    "numpy": ("https://docs.scipy.org/doc/numpy", None),
+    "scipy": ("https://docs.scipy.org/doc/scipy/reference", None),
+    "matplotlib": ("https://matplotlib.org/", None),
     "bids": ("https://bids-standard.github.io/pybids/", None),
     "nibabel": ("https://nipy.org/nibabel/", None),
     "nipype": ("https://nipype.readthedocs.io/en/latest/", None),
@@ -352,6 +352,6 @@
 
 
 def setup(app):
-    app.add_stylesheet("theme_overrides.css")
+    app.add_css_file("theme_overrides.css")
     # We need this for the boilerplate script
-    app.add_javascript("https://cdn.rawgit.com/chrisfilo/zenodo.js/v0.1/zenodo.js")
+    app.add_js_file("https://cdn.rawgit.com/chrisfilo/zenodo.js/v0.1/zenodo.js")
diff --git a/setup.cfg b/setup.cfg
index dbfba502c..2e82805cf 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -24,7 +24,7 @@ python_requires = >=3.7
 install_requires =
     indexed_gzip >= 0.8.8
     nibabel >= 3.0
-    nipype >= 1.4
+    nipype >= 1.5
     nitime
     nitransforms >= 20.0.0rc3,<20.2
     niworkflows ~= 1.2.3
@@ -54,7 +54,7 @@ doc =
     packaging
     pydot >= 1.2.3
     pydotplus
-    sphinx >= 1.5.3, < 3
+    sphinx >= 1.8
     sphinx-argparse
     sphinx_rtd_theme
     sphinxcontrib-napoleon