diff --git a/requirements.txt b/requirements.txt
index 4ed021d0..77818236 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
-cliff>=2.6.0 # Apache-2.0
+cliff>=2.8.0 # Apache-2.0
 iso8601>=0.1.11 # MIT
 netaddr!=0.7.16,>=0.7.13 # BSD
 requests>=2.14.2 # Apache-2.0
@@ -16,5 +16,5 @@ oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0
 oslo.log>=3.22.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
 oslosphinx>=4.7.0 # Apache-2.0
-oslo.serialization>=1.10.0 # Apache-2.0
+oslo.serialization!=2.19.1,>=1.10.0 # Apache-2.0
 openstackdocstheme>=1.11.0 # Apache-2.0