diff --git a/doc-requirements.txt b/doc-requirements.txt
index 639480b..8cfd949 100644
--- a/doc-requirements.txt
+++ b/doc-requirements.txt
@@ -3,6 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 oslo.config>=3.9.0 # Apache-2.0
+oslo.log>=1.14.0 # Apache-2.0
 sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2 # BSD
 sphinxcontrib-httpdomain # BSD
 sphinx_rtd_theme