diff --git a/muted-tests.yml b/muted-tests.yml
index e1be28899c947..6291fe13420c2 100644
--- a/muted-tests.yml
+++ b/muted-tests.yml
@@ -254,6 +254,9 @@ tests:
 - class: org.elasticsearch.lucene.RollingUpgradeSearchableSnapshotIndexCompatibilityIT
   method: testSearchableSnapshotUpgrade {p0=[9.0.0, 9.0.0, 8.18.0]}
   issue: https://github.com/elastic/elasticsearch/issues/119979
+- class: org.elasticsearch.lucene.RollingUpgradeSearchableSnapshotIndexCompatibilityIT
+  method: testMountSearchableSnapshot {p0=[9.0.0, 8.18.0, 8.18.0]}
+  issue: https://github.com/elastic/elasticsearch/issues/119550
 
 # Examples:
 #