diff --git a/requirements.txt b/requirements.txt
index 815be94..c9f839c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,6 +9,7 @@
 octavia-lib>=1.0.0 # Apache-2.0
 oslo.config>=5.2.0 # Apache-2.0
 oslo.log>=3.36.0  # Apache-2.0
+oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
 oslo.utils>=3.33.0  # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 python-barbicanclient>=4.5.2 # Apache-2.0