diff --git a/requirements-py3.txt b/requirements-py3.txt
index cd584763c8..bef1651ef4 100644
--- a/requirements-py3.txt
+++ b/requirements-py3.txt
@@ -20,6 +20,7 @@ oslo.config>=1.2.1
 # oslo.messaging tries to pull in eventlet
 # oslo.messaging>=1.3.0
 oslo.db>=0.2.0  # Apache-2.0
+oslo.i18n>=0.1.0  # Apache-2.0
 Babel>=1.3
 oauthlib>=0.6
 dogpile.cache>=0.5.3