diff --git a/docs/requirements.txt b/docs/requirements.txt
index 75463025ec9..18b391585b5 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,34 +1,45 @@
-alabaster
-Babel
-beautifulsoup4
-certifi
-charset-normalizer
-Cython
+alabaster==0.7.12
+atomicwrites==1.4.0
+attrs==21.4.0
+Babel==2.9.1
+beautifulsoup4==4.10.0
+certifi==2021.10.8
+charset-normalizer==2.0.10
+colorama==0.4.4
+Cython==0.29.26
 docutils==0.14
-idna
-imagesize
-Jinja2
-lxml
-MarkupSafe
-mistune
-packaging
-pydata-sphinx-theme
-Pygments
-pyparsing
-pytz
-requests
-snowballstemmer
-soupsieve
-Sphinx
-sphinx-copybutton
-sphinx-inline-tabs
-sphinxcontrib-applehelp
-sphinxcontrib-devhelp
-sphinxcontrib-htmlhelp
-sphinxcontrib-jsmath
-sphinxcontrib-qthelp
-sphinxcontrib-serializinghtml
-urllib3
-sphinx_sitemap
-pytest
-pytest-html
+idna==3.3
+imagesize==1.3.0
+importlib-metadata==4.10.1
+iniconfig==1.1.1
+Jinja2==3.0.3
+lxml==4.7.1
+MarkupSafe==2.0.1
+mistune==2.0.2
+packaging==21.3
+pluggy==1.0.0
+py==1.11.0
+pydata-sphinx-theme==0.8.0
+Pygments==2.11.2
+pyparsing==3.0.6
+pytest==6.2.5
+pytest-html==3.1.1
+pytest-metadata==1.11.0
+pytz==2021.3
+requests==2.27.1
+six==1.16.0
+snowballstemmer==2.2.0
+soupsieve==2.3.1
+Sphinx==4.4.0
+sphinx-copybutton==0.4.0
+sphinx-inline-tabs==2022.1.2b11
+sphinx-sitemap==2.2.0
+sphinxcontrib-applehelp==1.0.2
+sphinxcontrib-devhelp==1.0.2
+sphinxcontrib-htmlhelp==2.0.0
+sphinxcontrib-jsmath==1.0.1
+sphinxcontrib-qthelp==1.0.3
+sphinxcontrib-serializinghtml==1.1.5
+toml==0.10.2
+urllib3==1.26.8
+zipp==3.7.0