diff --git a/requirements.txt b/requirements.txt
index aad1d06a..2c8992ab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ networkx>=1.10
 oslo.concurrency>=2.3.0 # Apache-2.0
 oslo.config>=2.3.0 # Apache-2.0
 oslo.db>=2.4.1 # Apache-2.0
-oslo.messaging!=1.17.0,!=1.17.1,>=1.16.0 # Apache-2.0
+oslo.messaging!=1.17.0,!=1.17.1,!=2.6.0,>=1.16.0 # Apache-2.0
 oslo.utils>=2.0.0 # Apache-2.0
 oslo.log>=1.8.0 # Apache-2.0
 oslo.serialization>=1.4.0 # Apache-2.0