diff --git a/docs/requirements.txt b/docs/requirements.txt
index 4cb41dac..d7bf7fec 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -29,7 +29,7 @@ sphinx-sitemap==2.9.0
 
 # Vale dependencies
 rst2html==2020.7.4
-vale==3.13.0.0
+vale==3.18.0.0
 
 # Additional extensions 
 sphinxcontrib-mermaid==2.1.0