diff --git a/requirements.txt b/requirements.txt
index db0cef52..2f0f6cdb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ keystoneauth1>=2.21.0 # Apache-2.0
 openstacksdk>=0.9.17 # Apache-2.0
 osc-lib>=1.5.1 # 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
 python-heatclient>=1.6.1 # Apache-2.0
 PyYAML>=3.10.0 # MIT