diff --git a/requirements.txt b/requirements.txt
index e393a71..f5991b6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ keystoneauth1>=2.21.0 # Apache-2.0
 stevedore>=1.20.0 # Apache-2.0
 requests>=2.14.2 # Apache-2.0
 oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0
-oslo.serialization>=1.10.0 # Apache-2.0
+oslo.serialization!=2.19.1,>=1.10.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
 os-client-config>=1.27.0 # Apache-2.0
 osc-lib>=1.5.1 # Apache-2.0