diff --git a/requirements.txt b/requirements.txt
index 4d787c42..f6e5e4c2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ oslo.config!=4.3.0,!=4.4.0,>=4.0.0 # Apache-2.0
 oslo.context>=2.14.0 # Apache-2.0
 oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
-oslo.serialization>=1.10.0 # Apache-2.0
+oslo.serialization!=2.19.1,>=1.10.0 # Apache-2.0
 debtcollector>=1.2.0 # Apache-2.0
 pyinotify>=0.9.6;sys_platform!='win32' and sys_platform!='darwin' and sys_platform!='sunos5' # MIT
 python-dateutil>=2.4.2 # BSD