diff --git a/requirements.txt b/requirements.txt
index d2322fe17..8c8813390 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ dogpile.cache>=0.6.2 # BSD
 jsonschema!=2.5.0,<3.0.0,>=2.0.0 # MIT
 keystoneauth1>=2.20.0 # Apache-2.0
 osc-lib>=1.5.1 # Apache-2.0
-oslo.i18n>=2.1.0 # Apache-2.0
+oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
 PrettyTable<0.8,>=0.7.1 # BSD