diff --git a/docs/mkdocs/requirements.txt b/docs/mkdocs/requirements.txt
index 26e9fc683..f1b159c8f 100644
--- a/docs/mkdocs/requirements.txt
+++ b/docs/mkdocs/requirements.txt
@@ -20,19 +20,19 @@ Markdown==3.3.7            # we cannot install a more recent version yet as mkdo
 markdown-include==0.8.0
 MarkupSafe==2.1.1
 mergedeep==1.3.4
-mkdocs==1.4.2
-mkdocs-git-revision-date-localized-plugin==1.1.0
-mkdocs-material==8.5.11
+mkdocs==1.4.3
+mkdocs-git-revision-date-localized-plugin==1.2.0
+mkdocs-material==9.1.9
 mkdocs-material-extensions==1.1.1
-mkdocs-minify-plugin==0.6.2
+mkdocs-minify-plugin==0.6.4
 mkdocs-redirects==1.2.0
 mkdocs-simple-hooks==0.1.5
 nltk==3.8
 packaging==22.0
 plantuml==0.3.0
-plantuml-markdown==3.7.3
-Pygments==2.13.0
-pymdown-extensions==9.9
+plantuml-markdown==3.9.1
+Pygments==2.14.0
+pymdown-extensions==9.9.1
 pyparsing==3.0.9
 python-dateutil==2.8.2
 pytz==2022.7