diff --git a/doc/requirements.txt b/doc/requirements.txt
index 7d04ef7..bd3a30e 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,4 @@
 sphinx>=2.0.0,!=2.1.0,<7.2.0 # BSD
-openstackdocstheme>=2.2.1 # Apache-2.0
+openstackdocstheme>=2.2.1,<3.4 # Apache-2.0
 # releasenotes
 reno>=3.1.0 # Apache-2.0