diff --git a/docs/conf.py b/docs/conf.py
index a9e919c045..574568cc82 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -89,7 +89,7 @@ language = None
 # directories to ignore when looking for source files.
 # This patterns also effect to html_static_path and html_extra_path
 exclude_patterns = ['_build', 'doxygen_html', 'Thumbs.db', '.DS_Store',
-                    'README.md', 'lv_examples', 'out_html' ]
+                    'README.md', 'lv_examples', 'out_html', 'env' ]
 
 # The name of the Pygments (syntax highlighting) style to use.
 pygments_style = 'sphinx'
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 06400084d6..0ce269828d 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -7,7 +7,7 @@ commonmark==0.9.1
 docutils==0.16
 idna==2.10
 imagesize==1.2.0
-importlib-metadata==4.0.1
+importlib-metadata==4.8.1
 Jinja2==2.11.3
 Markdown==3.3.4
 MarkupSafe==1.1.1
@@ -19,16 +19,16 @@ recommonmark==0.6.0
 requests==2.25.1
 six==1.16.0
 snowballstemmer==2.1.0
-Sphinx==4.0.1
+Sphinx==4.5.0
 sphinx-markdown-tables==0.0.15
 sphinx-rtd-theme==0.5.2
 sphinx-sitemap==2.2.0
 sphinxcontrib-applehelp==1.0.2
 sphinxcontrib-devhelp==1.0.2
-sphinxcontrib-htmlhelp==1.0.3
+sphinxcontrib-htmlhelp==2.0.0
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.3
-sphinxcontrib-serializinghtml==1.1.4
+sphinxcontrib-serializinghtml==1.1.5
 typing-extensions==3.10.0.0
 urllib3==1.26.5
 zipp==3.4.1