diff --git a/docs/README.md b/docs/README.md
index 5f0e865d8..f895f15e4 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -25,10 +25,11 @@ There are also some Python specific libraries that need to be installed. You can
 * sphinxcontrib-jsmath
 * sphinxcontrib-qthelp
 * sphinxcontrib-serializinghtml
-* sphinxcontrib-mermaid
+* sphinxcontrib-mermaid==0.9.2
 * sphinx-design
 * sphinx-rtd-dark-mode
 * typing-extensions
+* sphinx-reredirects
 * dirsync
 
 To install using the `requirements.txt` file use the following command:
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 520b5c9fa..bd14ca059 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -10,7 +10,7 @@ sphinxcontrib-htmlhelp
 sphinxcontrib-jsmath
 sphinxcontrib-qthelp
 sphinxcontrib-serializinghtml
-sphinxcontrib-mermaid
+sphinxcontrib-mermaid==0.9.2
 sphinx-design
 sphinx-rtd-dark-mode
 typing-extensions