diff --git a/docs/requirements.txt b/docs/requirements.txt
index a38822096..1b7f62282 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,16 +1,16 @@
-autodoc_pydantic
+autodoc_pydantic==1.8.0
 myst_parser
-nbsphinx
-sphinx
+nbsphinx==0.8.9
+sphinx==4.5.0
 recommonmark
 sphinx_intl
-sphinx-autobuild
+sphinx-autobuild==2021.3.14
 sphinx_book_theme
-sphinx_rtd_theme
-sphinx-typlog-theme
+sphinx_rtd_theme==1.0.0
+sphinx-typlog-theme==0.8.0
 sphinx-panels
 toml
 myst_nb
 sphinx_copybutton
-pydata-sphinx-theme
+pydata-sphinx-theme==0.13.1
 furo
\ No newline at end of file