diff --git a/doc/requirements.txt b/doc/requirements.txt
index b1b1a30..ab749f4 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -9,7 +9,7 @@ docutils_stubs ~= 0.0.22
 sphinx_rtd_theme ~= 3.0
 
 # Sphinx Extenstions
-sphinxcontrib-mermaid ~= 1.0
+sphinxcontrib-mermaid ~= 1.2
 autoapi >= 2.0.1
 sphinx_design ~= 0.6.1
 sphinx-copybutton >= 0.5