diff --git a/doc/requirements.txt b/doc/requirements.txt
index d688d3025d..7e32b9fbbc 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -10,7 +10,7 @@ sphinxcontrib-seqdiag>=0.8.4 # BSD
 docutils>=0.11 # OSI-Approved Open Source, Public Domain
 sphinx!=1.6.6,>=1.6.2 # BSD
 graphviz!=0.5.0,>=0.4 # MIT License
-openstackdocstheme>=1.17.0 # Apache-2.0
+openstackdocstheme>=1.18.1 # Apache-2.0
 sadisplay>=0.4.8 # BSD
 
 # This needs to be installed after above modules