diff --git a/doc/requirements.txt b/doc/requirements.txt
index fa203897839..bc02da36353 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -3,4 +3,5 @@
 # process, which may cause wedges in the gate later.
 sphinx!=1.6.6,>=1.6.2 # BSD
 openstackdocstheme>=1.18.1 # Apache-2.0
+oslotest>=3.2.0 # Apache-2.0
 reno>=2.5.0 # Apache-2.0