diff --git a/setup.py b/setup.py
index a904293..d4d651f 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 requirements = [
     'jupyter',
     'regex',
-    'sphinx==5.3.0', # >=5.1.1 to enable pre_border-radius in code cells, 6.1.3 shows blank webpages
+    'sphinx==5.1.1', # >=5.1.1 to enable pre_border-radius in code cells, 6.1.3 shows blank webpages
     'recommonmark',
     'sphinxcontrib-bibtex==2.4.2', # >=2.2 to enable citet and citep
     'pybtex-apa-style',
@@ -16,7 +16,7 @@
     'numpydoc',
     'awscli',
     'gitpython',
-    'sphinx_autodoc_typehints',
+    'sphinx_autodoc_typehints==1.19.2',
     'astor',
     'yapf',
     'fasteners',