diff --git a/requirements.txt b/requirements.txt
index 95ae4c209..4c5ec2841 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ Babel!=2.4.0,>=2.3.4 # BSD
 eventlet!=0.18.3,!=0.20.1,<0.21.0,>=0.18.2 # MIT
 oslo.concurrency>=3.8.0 # Apache-2.0
 oslo.log>=3.22.0 # Apache-2.0
-oslo.serialization>=1.10.0 # Apache-2.0
+oslo.serialization!=2.19.1,>=1.10.0 # Apache-2.0
 oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0
 oslo.privsep!=1.17.0,>=1.9.0 # Apache-2.0
 oslo.service>=1.10.0 # Apache-2.0