diff --git a/requirements.txt b/requirements.txt
index 30f17b979f1..2046e84f43b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ oslo.policy>=3.12.0 # Apache-2.0
 oslo.privsep>=2.3.0 # Apache-2.0
 oslo.reports>=1.18.0 # Apache-2.0
 oslo.rootwrap>=5.15.0 # Apache-2.0
-oslo.serialization>=2.25.0 # Apache-2.0
+oslo.serialization>=5.5.0 # Apache-2.0
 oslo.service>=3.5.0 # Apache-2.0
 oslo.upgradecheck>=1.3.0 # Apache-2.0
 oslo.utils>=7.0.0 # Apache-2.0